Ehrlich reagent — 5-HTP
White · Pink · Purple
5-HTP (Oxitriptan, Cincofarm, Levothym, Levotonine, Oxyfan, Telesol, Tript-OH, Triptum)
Source text (English): Pink > Purple
There are more substances than colors, so to increase analysis precision use a kit with multiple reagents. Exact color of a reaction depends on adulteration, quantity, lighting, temperature, exposure to air, storage, as well as reagent quality and degradation. Positive or negative result does not indicate if a substance is safe. No substance is 100% safe.
White · Pink · Purple
5-HTP (Oxitriptan, Cincofarm, Levothym, Levotonine, Oxyfan, Telesol, Tript-OH, Triptum)
Source text (English): Pink > Purple
White · Yellow · Green
5-HTP (Oxitriptan, Cincofarm, Levothym, Levotonine, Oxyfan, Telesol, Tript-OH, Triptum)
Source text (English): yellow > green
White · Purple
Acethyl-dihydro-codeine
Source text (English): purple
White · Green
Acethyl-dihydro-codeine
Source text (English): green
No reaction
Acethyl-dihydro-codeine
Source text (English): no color change
White · Purple · Brown · Black · Green
Alpha-acetyl-methadol
Source text (English): purple-brown - grey-green
White · Purple · Brown
Alpha-acetyl-methadol
Source text (English): purple-brown - brown
White · Black · Green
Alpha-acetyl-methadol
Source text (English): grey-green
No reaction
Alprazolam
Source text (English): no color change
No reaction
Alprazolam
Source text (English): no color change
No reaction
Alprazolam
Source text (English): no color change
No reaction
Alprazolam
Source text (English): no color change
Pink · Green
Alprazolam
Source text (English): pale green
White · Blue
Alprazolam
Source text (English): slow blue / violet


White · Orange
Amphetamine (Adderall, Aderal)
Source text (English): just orange spots
No reaction
Amphetamine (Adderall, Aderal)
Source text (English): no color change
Yellow · Green · Blue
Amphetamine (Adderall, Aderal)
Source text (English): Neon green / blue
White · Orange · Red
Amphetamine (Adderall, Aderal)
Source text (English): orange > red
Orange · Pink
Amphetamine (Adderall, Aderal)
Source text (English): pink
No reaction
Amphetamine (Adderall, Aderal)
Source text (English): no blue color change
No reaction
Amphetamine (Adderall, Aderal)
Source text (English): no color change
No reaction
Amphetamine (Adderall, Aderal)
Source text (English): no color change
White · Yellow
Amphetamine (Adderall, Aderal)
Source text (English): no change / faint yellow
White · Yellow · Orange · Brown
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): orange > brownish
No reaction
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): no color change
Yellow · Green
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): slow (dark) green
White · Orange · Red
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): orange > red
No reaction
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): clear or red
Orange · Pink
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): pink
No reaction
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): no blue color change
No reaction
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): no color change
No reaction
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): no color change
No reaction
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): no color change
Pink · Green
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): pale green
White · Orange
Amphetamine (Racemic) (Speed, Paste, Amfetamine)
Source text (English): (light) orange


White · Pink · Red
Aspirin
Source text (English): pink > deep red
No reaction
Aspirin
Source text (English): no color change
Yellow · Brown · Black
Aspirin
Source text (English): black
White · Brown
Aspirin
Source text (English): light brown
White · Blue · Purple
Aspirin
Source text (English): blue > purple
No reaction
Aspirin
Source text (English): no blue color change
No reaction
Aspirin
Source text (English): no color change
No reaction
Aspirin
Source text (English): no color change
Pink · Green
Aspirin
Source text (English): pale green
No reaction
Aspirin
Source text (English): no color change

No reaction
Baclofen (Lioresal, Gablofen)
Source text (English): no color change
No reaction
Baclofen (Lioresal, Gablofen)
Source text (English): no color change
No reaction
Baclofen (Lioresal, Gablofen)
Source text (English): no color change
No reaction
Benzocaine
Source text (English): no color change
No reaction
Benzocaine
Source text (English): no color change
Yellow · Brown
Benzocaine
Source text (English): light orange-brown
No reaction
Benzocaine
Source text (English): no color change
No reaction
Benzocaine
Source text (English): no color change
No reaction
Benzocaine
Source text (English): no pink color change
White · Yellow · Orange
Benzocaine
Source text (English): orange
White · Yellow
Benzocaine
Source text (English): yellow
No reaction
Benzocaine
Source text (English): no color change
No reaction
Benzocaine
Source text (English): no color change


White · Red · Brown
Benzphetamine
Source text (English): red > brown
White · Green · Yellow
Benzphetamine
Source text (English): green > yellow
Yellow · Green
Benzphetamine
Source text (English): brilliant yellow green
White · Yellow · Brown
Benzphetamine
Source text (English): yellow > brown
White · Yellow · Orange
Benzphetamine
Source text (English): yellow > orange
White · Red · Purple
Benzylmorphine
Source text (English): red > violet
White · Purple
Buprenorphine
Source text (English): violet or no color change
White · Black
Buprenorphine
No reaction
Source text (English): black or no color change
White · Purple
Buprenorphine
Source text (English): slow purple
No reaction
Buprenorphine
Source text (English): no color change
No reaction
Bupropion
Source text (English): no color change (immediate; unchanged at 5 min)
No reaction
Caffeine (coffee, tea)
Source text (English): no color change
No reaction
Caffeine (coffee, tea)
Source text (English): no color change
No reaction
Caffeine (coffee, tea)
Source text (English): no color change
White · Yellow
Caffeine (coffee, tea)
Source text (English): light yellow / yellow
No reaction
Caffeine (coffee, tea)
Source text (English): no color change
No reaction
Caffeine (coffee, tea)
Source text (English): no pink color change
No reaction
Caffeine (coffee, tea)
Source text (English): no blue color change
No reaction
Caffeine (coffee, tea)
Source text (English): no color change
No reaction
Caffeine (coffee, tea)
Source text (English): no color change
No reaction
Caffeine (coffee, tea)
Source text (English): no color change


No reaction
Carisoprodol (Soma)
Source text (English): no color change
No reaction
Carisoprodol (Soma)
Source text (English): no color change
No reaction
Carisoprodol (Soma)
Source text (English): no color change
White · Red
Chlorpromazine HCl
Source text (English): deep purplish red
White · Red
Chlorpromazine HCl
Source text (English): blackish red
Yellow
Chlorpromazine HCl
White · Green · Black
Chlorpromazine HCl
Source text (English): green > black
White · Green · Black
Chlorpromazine HCl
Source text (English): green > black
Pink · Blue · Green
Chlorpromazine HCl
Source text (English): cyan / turquoise blue
White · Yellow · Brown
Clonazepam (Klonopin, K-Pins, Rivotril, kpin)
Source text (English): yellow-brown

White · Purple
Codeine (Lean, Purple Drank, Syrup)
Source text (English): dark purple
White · Blue · Green
Codeine (Lean, Purple Drank, Syrup)
Source text (English): dark bluish green
Yellow · Green · Orange · Brown
Codeine (Lean, Purple Drank, Syrup)
Source text (English): dark olive spots
White · Black · Brown
Codeine (Lean, Purple Drank, Syrup)
Source text (English): faint brown / black
White · Yellow
Codeine (Lean, Purple Drank, Syrup)
Source text (English): faint yellow
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no pink color change
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no blue color change
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no color change
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no color change
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no color change

No reaction
Coluracetam
Source text (English): no color change
No reaction
Coluracetam
Source text (English): no color change
No reaction
Coluracetam
Source text (English): no color change
No reaction
Coluracetam
Source text (English): no color change
No reaction
Coluracetam
Source text (English): no color change
No reaction
Coluracetam
Source text (English): no color change
No reaction
Creatine (N-Carbamimidoyl-N-methylglycine, Methylguanidoacetic acid)
Source text (English): no color change
No reaction
Creatine (N-Carbamimidoyl-N-methylglycine, Methylguanidoacetic acid)
Source text (English): no color change
No reaction
Creatine (N-Carbamimidoyl-N-methylglycine, Methylguanidoacetic acid)
Source text (English): no color change
No reaction
Creatine (N-Carbamimidoyl-N-methylglycine, Methylguanidoacetic acid)
Source text (English): no color change
No reaction
Creatine (N-Carbamimidoyl-N-methylglycine, Methylguanidoacetic acid)
Source text (English): no color change
No reaction
Creatine (N-Carbamimidoyl-N-methylglycine, Methylguanidoacetic acid)
Source text (English): no blue color change
No reaction
Creatine (N-Carbamimidoyl-N-methylglycine, Methylguanidoacetic acid)
Source text (English): no color change
No reaction
Creatine (N-Carbamimidoyl-N-methylglycine, Methylguanidoacetic acid)
Source text (English): no color change

White · Purple
Cyclobenzaprine
Source text (English): reddish purple
White · Purple
Cyclobenzaprine
Source text (English): reddish purple
Yellow · Purple
Cyclobenzaprine
Source text (English): reddish purple
White · Brown · Black
Cyclobenzaprine
Source text (English): dark brown / black
White · Purple
Cyclobenzaprine
Source text (English): purple
Pink · Green
Cyclobenzaprine
Source text (English): pale green
White · Black · Blue
Dapoxetine
Source text (English): blue-gray
White · Green · Blue
Dapoxetine
Source text (English): green > blue
Yellow · Green · Blue
Dapoxetine
Source text (English): green > blue
White · Black
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): grey > black
White · Yellow
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): yellow
Yellow · Green
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): Light brown green
White · Black
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): black
No reaction
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): no color change
No reaction
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): no pink color change
Orange · Pink
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): no color change, darker pink
No reaction
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): no color change
White · Yellow
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): yellow
No reaction
DXM (DMO, Dex, Robitussin, Delsym, DexAlone, Duract, syrup, robo, robotussin)
Source text (English): no color change
No reaction
Diazepam
Source text (English): no color change
White · Yellow
Diazepam
Source text (English): light yellow
No reaction
Diazepam
Source text (English): no color change
No reaction
Diazepam
Source text (English): no blue color change
White · Pink · Purple
Diazepam
Source text (English): violet / purple
No reaction
Diazepam
Source text (English): no color change


White · Pink
Diclofenac
Source text (English): no color change / light purple
White · Red · Purple
Diclofenac
Source text (English): dark red/ purple
White · Purple
Diclofenac
Source text (English): light purple
White · Purple · Brown
Diethyl-thiambutene
Source text (English): purple-brown
White · Purple · Blue
Diethyl-thiambutene
Source text (English): violet-blue
White · Green · Blue
Diethyl-thiambutene
Source text (English): green - green-blue
White · Purple
Diethylthiambutene
Source text (English): violet
Yellow · Green · Blue
Diethylthiambutene
Source text (English): green > green/blue
No reaction
Amfepramone
Source text (English): no color change
White · Brown
Amfepramone
Source text (English): light olive
Yellow · Brown
Amfepramone
Source text (English): light brown
White · Yellow
Amfepramone
Source text (English): light yellow
No reaction
Amfepramone
Source text (English): no color change
No reaction
Amfepramone
Source text (English): no color change
White · Purple
Dihydrocodeine (dhc)
Source text (English): violet
Yellow · Black · Green
Dihydrocodeine (dhc)
Source text (English): grey / > green
White · Purple · Brown
Dimethyl-thiambutene
Source text (English): purple-brown
White · Purple · Blue
Dimethyl-thiambutene
Source text (English): violet-blue
White · Green · Blue
Dimethyl-thiambutene
Source text (English): green - green-blue
White · Orange
Diphenhydramine
Source text (English): orange
White · Red
Doxepin HCl
Source text (English): blackish red
White · Red
Doxepin HCl
Source text (English): very dark red
Yellow · Red
Doxepin HCl
Source text (English): dark reddish brown
White · Red
Doxepin HCl
Source text (English): deep reddish brown
Pink · Blue · Green
Doxepin HCl
Source text (English): cyan / turquoise blue
White · Brown
DPT (Dipropyltryptamine, The Light)
Source text (English): brown
White · Orange · Brown · Black
DPT (Dipropyltryptamine, The Light)
Source text (English): orange > black
Yellow · Brown · Black
DPT (Dipropyltryptamine, The Light)
Source text (English): brown > black
White · Brown
DPT (Dipropyltryptamine, The Light)
Source text (English): dark brown
White · Red · Brown
DPT (Dipropyltryptamine, The Light)
Source text (English): wine -> brown
No reaction
DPT (Dipropyltryptamine, The Light)
Source text (English): no blue color change
White · Pink
DPT (Dipropyltryptamine, The Light)
Source text (English): Pink
White · Yellow
DPT (Dipropyltryptamine, The Light)
Source text (English): yellow
No reaction
DPT (Dipropyltryptamine, The Light)
Source text (English): no color change
No reaction
Duloxetine
Source text (English): no color change
No reaction
Duloxetine
Source text (English): no color change
No reaction
Duloxetine
Source text (English): no color change
White · Blue
Embutramide
Source text (English): blue
Yellow · Brown
Embutramide
Source text (English): brown
No reaction
Etaqualone
Source text (English): no color change
No reaction
Etaqualone
Source text (English): no color change
Yellow · Orange
Etaqualone
Source text (English): no color change → dark yellow → dark orange
No reaction
Etaqualone
Source text (English): no blue color change
No reaction
Etaqualone
Source text (English): no color change
White · Yellow
Etaqualone
Source text (English): yellow
White · Orange · Purple
Ethylmorphine (Codethyline, Dionine)
Source text (English): orange > purple
White · Green
Ethylmorphine (Codethyline, Dionine)
Source text (English): dark green
Yellow · Green
Ethylmorphine (Codethyline, Dionine)
Source text (English): green
White · Yellow · Green · Blue
Ethylmorphine (Codethyline, Dionine)
Source text (English): yellow > green > blue
White · Blue
Exedrine
Source text (English): brilliant blue
White · Orange · Brown
Fentanyl (fentanil, Sublimaze, Actiq, Durogesic, Duragesic, Fentora, Matrifen, Haldid, Onsolis, Instanyl, Abstral, Lazanda)
Source text (English): orange > brown
White · Green
Fentanyl (fentanil, Sublimaze, Actiq, Durogesic, Duragesic, Fentora, Matrifen, Haldid, Onsolis, Instanyl, Abstral, Lazanda)
Source text (English): clear or green
Yellow
Fentanyl (fentanil, Sublimaze, Actiq, Durogesic, Duragesic, Fentora, Matrifen, Haldid, Onsolis, Instanyl, Abstral, Lazanda)
Source text (English): olive green


White · Pink · Purple
Flunitrazepam (Rohypnol)
Source text (English): violet / purple
White · Brown
Fluoxymesterone
Source text (English): brownish
White · Green
Fluoxymesterone
Source text (English): green
Yellow · Red
Fluoxymesterone
Source text (English): dark red
White · Yellow
Fluoxymesterone
Source text (English): faint yellow
No reaction
Fluoxymesterone
Source text (English): no color change
No reaction
Fluoxymesterone
Source text (English): no blue color change
No reaction
Fluoxymesterone
Source text (English): no color change
No reaction
Fluoxymesterone
Source text (English): no color change
Pink · Blue
Fluoxymesterone
Source text (English): light blue
No reaction
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): no color change
No reaction
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): no color change
No reaction
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): no color change
No reaction
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): no color change
No reaction
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): no color change
Orange · Pink
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): pink
Orange · Purple
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): purple
No reaction
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): no color change
No reaction
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): no color change
Pink · Green
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): pale green
White · Yellow
Gabapentin (Neurontin, Gabarone, Gralise)
Source text (English): no change / faint yellow


White · Orange · Brown · Green
GTS-21
Source text (English): orange > dark brown / green
White · Brown
GTS-21
Source text (English): dark brown
Yellow · Brown
GTS-21
Source text (English): dark brown
White · Brown
GTS-21
Source text (English): dark brown
White · Brown
GTS-21
Source text (English): dark brown
Brown · Orange
GTS-21
Source text (English): orange
White · Green · Purple
Guaifenesin
Source text (English): green with purple streaks
White · Yellow · Red · Purple
Hydromorphine
Source text (English): yellow > red > violet
White · Yellow · Orange · Green
Hydromorphine
Source text (English): yellow > orange > green
White · Blue · Black
Hydromorphine
Source text (English): dark blue > grey
White · Yellow · Red · Purple · Brown
Hydromorphone (Dilaudid)
Source text (English): yellow > red / magenta
White · Yellow · Orange · Brown
Hydromorphone (Dilaudid)
Source text (English): yellow > orange / brown
No reaction
Hydromorphone (Dilaudid)
Source text (English): no color change
White · Blue · Purple · Black
Hydromorphone (Dilaudid)
Source text (English): blue > purple / grey
No reaction
Hydroxyzine
Source text (English): no color change
White · Purple · Brown · Orange
Ibogaine (Endabuse, Iboga)
Source text (English): purplish > brown > orange
White · Pink · Purple
Ibogaine (Endabuse, Iboga)
Source text (English): purplish
White · Yellow · Green
Ibogaine (Endabuse, Iboga)
Source text (English): yellow / green
No reaction
Ibuprofen
Source text (English): no color change
White · Brown
Ibuprofen
Source text (English): light brown
Yellow · Brown
Ibuprofen
Source text (English): dark brown
White · Red · Brown
Ibuprofen
Source text (English): dark reddish brown
No reaction
Ibuprofen
Source text (English): no color change
No reaction
Ibuprofen
Source text (English): no blue color change
No reaction
Ibuprofen
Source text (English): no color change
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no color change
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no color change
Yellow · Orange · Red
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): deep brownish orange/red
White · Yellow
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): light yellow
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no color change
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no pink color change
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no blue color change
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no color change
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no color change
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no color change
Pink · Purple
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): violet / violet-blue
White · Pink
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): slow faint pink (3-5 min.)
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no color change
No reaction
Ketamine (Ket, Kitty, Special K, Cat Tranquilizer, Ketaset, Ketalar, Ketanest, Vitamin K, kittens)
Source text (English): no color change
No reaction
Ketamine H2O sol.
Source text (English): no color change
No reaction
Ketamine H2O sol.
Source text (English): no color change
No reaction
Ketamine H2O sol.
Source text (English): no color change
White · Yellow
Ketamine H2O sol.
Source text (English): light yellow
No reaction
Ketamine H2O sol.
Source text (English): no color change
No reaction
Ketamine H2O sol.
Source text (English): no pink color change
No reaction
Ketamine H2O sol.
Source text (English): no blue color change
No reaction
Ketamine H2O sol.
Source text (English): no color change
No reaction
Ketamine H2O sol.
Source text (English): no color change
No reaction
Ketamine H2O sol.
Source text (English): no color change
No reaction
Ketamine H2O sol.
Source text (English): no color change


No reaction
Levorphanol (Dextrophan)
Source text (English): no color change
White · Yellow · Brown
Levorphanol (Dextrophan)
Source text (English): yellow-brown
No reaction
Levorphanol (Dextrophan)
Source text (English): no color change
No reaction
Lidocaine
Source text (English): fizzes clear
White · Yellow
Lidocaine
Source text (English): yellow
Yellow · Brown
Lidocaine
Source text (English): brown
White · Red
Lidocaine
Source text (English): red
No reaction
Lidocaine
Source text (English): no color change
No reaction
Lidocaine
Source text (English): no blue color change
No reaction
Lidocaine
Source text (English): no color change
No reaction
Lidocaine
Source text (English): no color change
Pink · Blue
Lidocaine
Source text (English): blue
Pink · Blue
Lidocaine
Source text (English): blue precipitate


White · Orange
Lisdexamfetamine (Vyvanse, Elvanse)
Source text (English): orange
No reaction
Lisdexamfetamine (Vyvanse, Elvanse)
Source text (English): no color change
No reaction
Lisdexamfetamine (Vyvanse, Elvanse)
Source text (English): no color change
No reaction
Loperamide
Source text (English): no color change
No reaction
Loperamide
Source text (English): no color change
No reaction
Loperamide
Source text (English): no color change
No reaction
Lorazepam (Ativan, Orfidal, Lorsilan)
Source text (English): no color change
No reaction
Lorazepam (Ativan, Orfidal, Lorsilan)
Source text (English): no color change
No reaction
Lorazepam (Ativan, Orfidal, Lorsilan)
Source text (English): no color change
White · Yellow
Lorazepam (Ativan, Orfidal, Lorsilan)
Source text (English): no change / faint yellow
No reaction
Meclonazepam
Source text (English): no color change
No reaction
Meclonazepam
Source text (English): no color change
No reaction
Meclonazepam
Source text (English): no color change
No reaction
Melatonin
Source text (English): no color change
No reaction
Melatonin
Source text (English): no color change
White · Brown
Melatonin
Source text (English): light brown
No reaction
Melatonin
Source text (English): no color change
No reaction
Melatonin
Source text (English): no blue color change
White · Red · Purple
Melatonin
Source text (English): reddish > purple
White · Yellow · Green
Melatonin
Source text (English): yellow / orange > green
Pink · Green
Melatonin
Source text (English): pale green
White · Yellow · Orange
Melatonin
Source text (English): orange


No reaction
DMAA
Source text (English): fizzes clear
Yellow · Orange · Red
DMAA
Source text (English): red
No reaction
DMAA
Source text (English): no color change
Orange · Red · Purple
DMAA
Source text (English): no color change > opaque red > darker purple
No reaction
DMAA
Source text (English): no color change
No reaction
DMAA
Source text (English): no color change
No reaction
Memantine (Memaxa, Ebixa, Namenda, Namenda XR, Namzaric)
Source text (English): no color change
White · Brown · Black
Memantine (Memaxa, Ebixa, Namenda, Namenda XR, Namzaric)
Source text (English): grey
Yellow · Orange · Red · Brown · Yellow
Memantine (Memaxa, Ebixa, Namenda, Namenda XR, Namzaric)
Source text (English): short reddish
No reaction
Memantine (Memaxa, Ebixa, Namenda, Namenda XR, Namzaric)
Source text (English): no color change
No reaction
Memantine (Memaxa, Ebixa, Namenda, Namenda XR, Namzaric)
Source text (English): no color change
No reaction
Memantine (Memaxa, Ebixa, Namenda, Namenda XR, Namzaric)
Source text (English): no color change
No reaction
Methaqualone (Quaaludes, Mandrax, Sopor, Quack, Vitamin Q, Soaper, qualudes)
Source text (English): no color change
No reaction
Methaqualone (Quaaludes, Mandrax, Sopor, Quack, Vitamin Q, Soaper, qualudes)
Source text (English): no color change
Yellow · Orange
Methaqualone (Quaaludes, Mandrax, Sopor, Quack, Vitamin Q, Soaper, qualudes)
Source text (English): Very orange yellow
No reaction
Methaqualone (Quaaludes, Mandrax, Sopor, Quack, Vitamin Q, Soaper, qualudes)
Source text (English): no blue color change
White · Pink · Purple
Methadone (Dolophine, Methadose)
Source text (English): yellowish pink > violet
White · Yellow
Methadone (Dolophine, Methadose)
Source text (English): no color change
Yellow · Green · Blue
Methadone (Dolophine, Methadose)
Source text (English): green / green > blue
White · Yellow · Orange · Brown
Methadone (Dolophine, Methadose)
Source text (English): yellowish / brownish
White · Blue
Methadone (Dolophine, Methadose)
Source text (English): blue
No reaction
Methadone (Dolophine, Methadose)
Source text (English): no blue color change
No reaction
Methadone (Dolophine, Methadose)
Source text (English): no color change
White · Purple
Methyl-dihydro-morphine
Source text (English): purple
White · Green
Methyl-dihydro-morphine
Source text (English): green
White · Yellow · Black · Purple
Methyl-dihydro-morphine
Source text (English): grey-purple-yellow
White · Yellow
Methylphenidate (Concerta, Methylin, Ritalin, Equasym XL, mph, biphentin)
Source text (English): light orange
Yellow · Orange · Red · Brown · Yellow
Methylphenidate (Concerta, Methylin, Ritalin, Equasym XL, mph, biphentin)
Source text (English): short reddish
White · Yellow · Orange
Methylphenidate (Concerta, Methylin, Ritalin, Equasym XL, mph, biphentin)
Source text (English): yellow - orange
White · Yellow
Methylphenidate (Concerta, Methylin, Ritalin, Equasym XL, mph, biphentin)
Source text (English): no color change -> Tan
Orange · Purple
Methylphenidate (Concerta, Methylin, Ritalin, Equasym XL, mph, biphentin)
Source text (English): pale violet
No reaction
Methylphenidate (Concerta, Methylin, Ritalin, Equasym XL, mph, biphentin)
Source text (English): no color change
No reaction
Methylphenidate (Concerta, Methylin, Ritalin, Equasym XL, mph, biphentin)
Source text (English): no color change
White · Purple
Methylphenidate (Concerta, Methylin, Ritalin, Equasym XL, mph, biphentin)
Source text (English): slow purple
White · Yellow · Orange · Brown
Modafinil (Alertec, Modavigil, Modiodal, Provigil, Modalert)
Source text (English): yellow/orange > brown
White · Orange · Brown
Modafinil (Alertec, Modavigil, Modiodal, Provigil, Modalert)
Source text (English): orange > brown
Yellow · Red
Modafinil (Alertec, Modavigil, Modiodal, Provigil, Modalert)
Source text (English): brownish red
White · Orange
Modafinil (Alertec, Modavigil, Modiodal, Provigil, Modalert)
Source text (English): darkening orange
White · Orange · Red
Modafinil (Alertec, Modavigil, Modiodal, Provigil, Modalert)
Source text (English): deep orange / red
White · Orange
Morpheridine
Source text (English): dull orange
No reaction
Morpheridine
Source text (English): no color change
No reaction
Morpheridine
Source text (English): no color change
White · Red · Purple
Morphine (MS-Contin, Oramorph, Zomorph, Sevredol, Duramorph)
Source text (English): red > (light) purple
White · Blue · Green
Morphine (MS-Contin, Oramorph, Zomorph, Sevredol, Duramorph)
Source text (English): dark bluish green
Yellow · Black
Morphine (MS-Contin, Oramorph, Zomorph, Sevredol, Duramorph)
Source text (English): clear or grey
White · Blue · Black
Morphine (MS-Contin, Oramorph, Zomorph, Sevredol, Duramorph)
Source text (English): blue / black
White · Purple
Morphine (MS-Contin, Oramorph, Zomorph, Sevredol, Duramorph)
Source text (English): (dark) purple
No reaction
Morphine (MS-Contin, Oramorph, Zomorph, Sevredol, Duramorph)
Source text (English): no pink color change
No reaction
Morphine (MS-Contin, Oramorph, Zomorph, Sevredol, Duramorph)
Source text (English): no blue color change
No reaction
Morphine (MS-Contin, Oramorph, Zomorph, Sevredol, Duramorph)
Source text (English): no color change

White · Purple
Morphine-N-oxide
Source text (English): purple
White · Green
Morphine-N-oxide
Source text (English): green
White · Purple · Brown
Morphine-N-oxide
Source text (English): dull purple - brown
No reaction
Nimetazepam
Source text (English): no color change
No reaction
Nimetazepam
Source text (English): no color change
No reaction
Nimetazepam
Source text (English): no color change
White · Yellow · Brown
Nitrazepam
Source text (English): yellow
White · Purple
Norcodeine
Source text (English): purple
White · Green
Norcodeine
Source text (English): green
No reaction
Norcodeine
Source text (English): no color change
White · Purple
Normorphine
Source text (English): purple
White · Green
Normorphine
Source text (English): green
White · Black · Green
Normorphine
Source text (English): grey - green
White · Yellow
Oxazepam
Source text (English): light yellow / lemon yellow
White · Purple
Oxycodone
Source text (English): slow faint purple
White · Yellow · Green
Oxycodone
Source text (English): faint yellow > green
Yellow · Orange · Brown
Oxycodone
Source text (English): orange / brown
White · Brown
Oxycodone
Source text (English): brown spots
White · Yellow
Oxycodone
Source text (English): yellow
No reaction
Oxycodone
Source text (English): no pink color change
Orange · Pink
Oxycodone
Source text (English): Dark pink
No reaction
Oxycodone
Source text (English): no color change
No reaction
Oxycodone
Source text (English): no color change
Pink · Green
Oxycodone
Source text (English): pale green
White · Pink · Purple
Oxycodone
Source text (English): violet / purple


White · Purple
Oxymorphone
Source text (English): magenta > violet
White · Yellow · Brown
Oxymorphone
Source text (English): yellow > brown
Yellow · Black
Oxymorphone
Source text (English): black
White · Blue · Purple
Oxymorphone
Source text (English): blue > violet
No reaction
Papaverine HCl
Source text (English): no color change
White · Blue
Papaverine HCl
Source text (English): dark blue
White · Green
Papaverine HCl
Source text (English): light green
No reaction
Papaverine HCl
Source text (English): no color change
No reaction
Paracetamol (Acetaminophen)
Source text (English): no color change
No reaction
Paracetamol (Acetaminophen)
Source text (English): no color change
Yellow · Green
Paracetamol (Acetaminophen)
Source text (English): moderate olive
White · Brown · Purple
Paracetamol (Acetaminophen)
Source text (English): brownish purple
White · Green · Blue
Paracetamol (Acetaminophen)
Source text (English): blueish / teal
No reaction
Paracetamol (Acetaminophen)
Source text (English): no blue color change
No reaction
Paracetamol (Acetaminophen)
Source text (English): no color change
White · Black
Meperidine
Source text (English): grey
White · Orange
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): dull orange
White · Orange
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): slow orange
No reaction
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): no color change
White · Yellow · Orange
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): light yellow (slow) / orange
No reaction
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): no color change
White · Red · Orange
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): red - orange
No reaction
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): no color change
White · Yellow
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): clear or yellow
No reaction
Phenacetin
Source text (English): no color change
White · Yellow
Phenacetin
Source text (English): faint yellow
Yellow · Green · Brown
Phenacetin
Source text (English): green > brown
White · Brown
Phenacetin
Source text (English): dark brown
White · Purple
Phenacetin
Source text (English): violet
No reaction
Phenacetin
Source text (English): no blue color change
No reaction
Phenacetin
Source text (English): no color change
White · Orange · Red · Brown
Phenethylamine
Source text (English): orange > red > dark brown
White · Yellow
Phenethylamine
Source text (English): yellow
Yellow · Green
Phenethylamine
Source text (English): green
White · Orange · Red
Phenethylamine
Source text (English): orange/red
No reaction
Phenethylamine
Source text (English): faint tan
Orange · Pink · Purple
Phenethylamine
Source text (English): pink / purple
Orange · Brown · Purple
Phenethylamine
Source text (English): brownish purple
No reaction
Phenethylamine
Source text (English): no color change
No reaction
Phenethylamine
Source text (English): no color change
Pink · Green
Phenethylamine
Source text (English): dull green
White · Yellow
Phenethylamine
Source text (English): no change / faint yellow
No reaction
Phenobarbital (Phenobarbitone, Luminal)
Source text (English): no color change
No reaction
Phenobarbital (Phenobarbitone, Luminal)
Source text (English): no color change
No reaction
Phenomorphan
Source text (English): no color change
White · Yellow · Brown
Phenomorphan
Source text (English): yellow-brown
No reaction
Phenomorphan
Source text (English): no color change
White · Blue
Phenoxymethylpenicillin
Source text (English): blue
White · Orange
Phentermine
Source text (English): orange brown
White · Orange
Phentermine
Source text (English): light orange
Yellow · Green
Phentermine
Source text (English): green
White · Brown
Phentermine
Source text (English): brown
White · Purple
Pholcodeine
Source text (English): purple
White · Black · Green
Pholcodeine
Source text (English): grey-green
No reaction
Pholcodeine
Source text (English): no color change
No reaction
Pregabalin (Lyrica, Nervalin)
Source text (English): no color change
No reaction
Pregabalin (Lyrica, Nervalin)
Source text (English): no color change
No reaction
Pregabalin (Lyrica, Nervalin)
Source text (English): no color change
No reaction
Pregabalin (Lyrica, Nervalin)
Source text (English): no color change
No reaction
Pregabalin (Lyrica, Nervalin)
Source text (English): no color change
Orange · Pink
Pregabalin (Lyrica, Nervalin)
Source text (English): pink
Orange · Purple
Pregabalin (Lyrica, Nervalin)
Source text (English): purple
No reaction
Pregabalin (Lyrica, Nervalin)
Source text (English): no color change
No reaction
Pregabalin (Lyrica, Nervalin)
Source text (English): no color change
Pink · Green
Pregabalin (Lyrica, Nervalin)
Source text (English): pale green
White · Yellow
Pregabalin (Lyrica, Nervalin)
Source text (English): no change / faint yellow


No reaction
Procaine
Source text (English): no color change
White · Yellow
Procaine
Source text (English): very light yellow
Yellow · Orange
Procaine
Source text (English): deep orange
No reaction
Procaine
Source text (English): no color change
No reaction
Procaine
Source text (English): no color change
Orange · Yellow
Procaine
Source text (English): light yellow
White · Yellow · Orange
Procaine
Source text (English): orange
White · Yellow
Procaine
Source text (English): yellow
Pink · Blue
Procaine
Source text (English): weak light blue
Pink · Green
Procaine
Source text (English): greenish / blueish ring


White · Purple
Promethazine
Source text (English): purple red
No reaction
Pseudoephedrine
Source text (English): no color change
White · Orange
Pseudoephedrine
Source text (English): orange
No reaction
Pseudoephedrine
Source text (English): no color change
No reaction
Pseudoephedrine
Source text (English): no pink color change
No reaction
Pseudoephedrine
Source text (English): no blue color change
White · Yellow
Quinine
Source text (English): light yellow
White · Yellow
Quinine
Source text (English): yellow
Yellow · Orange · Green
Quinine
Source text (English): orange > green
No reaction
Quinine
Source text (English): no blue color change
No reaction
Quinine
Source text (English): no color change
No reaction
Racemorphan
Source text (English): no color change
White · Yellow · Brown
Racemorphan
Source text (English): yellow-brown
No reaction
Racemorphan
Source text (English): no color change
White · Purple
Salicylic acid
Source text (English): purple red
No reaction
Sibutramine
Source text (English): no color change
No reaction
Sibutramine
Source text (English): no color change
No reaction
Sibutramine
Source text (English): no color change
No reaction
Sildenafil (Viagra)
Source text (English): no color change
White · Brown
Sildenafil (Viagra)
Source text (English): faint brown
No reaction
Sildenafil (Viagra)
Source text (English): faint brown
No reaction
Sildenafil (Viagra)
Source text (English): no blue color change
White · Purple · Blue
Cialis / Tadalafil
Source text (English): purple / blue
White · Purple · Blue
Cialis / Tadalafil
Source text (English): purple / blue
Yellow · Brown · Purple
Cialis / Tadalafil
Source text (English): purple - brown
White · Brown
Cialis / Tadalafil
Source text (English): dark brown
White · Blue
Cialis / Tadalafil
Source text (English): dark blue
No reaction
Cialis / Tadalafil
Source text (English): no pink color change
No reaction
Cialis / Tadalafil
Source text (English): no blue color change
White · Purple · Blue
Cialis / Tadalafil
Source text (English): blue
White · Yellow
Cialis / Tadalafil
Source text (English): no change / faint yellow
White · Orange
TDIQ
Source text (English): orange
White · Brown
TDIQ
Source text (English): dark brown
Yellow · Brown
TDIQ
Source text (English): dark brown
White · Black
TDIQ
Source text (English): black
White · Green
TDIQ
Source text (English): dark green
Brown · Orange
TDIQ
Source text (English): orange
No reaction
Temazepam (Restoril, Normison)
Source text (English): no color change
No reaction
Temazepam (Restoril, Normison)
Source text (English): no color change
Yellow · Orange · Brown
Temazepam (Restoril, Normison)
Source text (English): faint orange/brownish
No reaction
Temazepam (Restoril, Normison)
Source text (English): no color change
No reaction
Temazepam (Restoril, Normison)
Source text (English): no color change
No reaction
Temazepam (Restoril, Normison)
Source text (English): no blue color change
No reaction
Temazepam (Restoril, Normison)
Source text (English): no color change
Pink · Green
Temazepam (Restoril, Normison)
Source text (English): green
White · Yellow
Temazepam (Restoril, Normison)
Source text (English): no change / faint yellow
White · Orange · Brown
Testosterone propionate
Source text (English): brown
White · Brown
Testosterone propionate
Source text (English): brown
Yellow · Brown
Testosterone propionate
Source text (English): brown
White · Brown · Black
Testosterone propionate
Source text (English): dark brown / black
White · Yellow · Brown
Testosterone propionate
Source text (English): yellow>brown
No reaction
Testosterone propionate
Source text (English): no blue color change
No reaction
Testosterone propionate
Source text (English): no color change
White · Yellow
Testosterone propionate
Source text (English): light yellow
Pink · Green
Testosterone propionate
Source text (English): pale green
White · Yellow
Testosterone propionate
Source text (English): no change / faint yellow
No reaction
Tetracaine
Source text (English): no color change
No reaction
Tetracaine
Source text (English): no color change
No reaction
Tetracaine
Source text (English): no color change
No reaction
Tetracaine
Source text (English): no color change
White · Yellow
Tetracaine
Source text (English): yellow
No reaction
Tetracaine
Source text (English): no color change
No reaction
Tetrahydropalmatine
Source text (English): no color change
White · Blue
Tetrahydropalmatine
Source text (English): turqoise blue
Yellow · Black
Tetrahydropalmatine
Source text (English): grey
White · Black
Tetrahydropalmatine
Source text (English): faint black
No reaction
Tetrahydropalmatine
Source text (English): no color change
Orange · Pink · Purple
Tetrahydropalmatine
Source text (English): (slow) pink
No reaction
Tetrahydropalmatine
Source text (English): not blue
No reaction
Tetrahydropalmatine
Source text (English): no color change
No reaction
Tetrahydropalmatine
Source text (English): no color change
White · Blue
Tetrahydrocannabinol (THC, D9-THC, Cannabis, Hash, Marijuana, Weed)
Source text (English): blue


White · Blue
THCV
Source text (English): blue
White · Orange
Thebaine HCl
Source text (English): orange / red
White · Yellow
Thebaine HCl
Source text (English): slow yellow over 5 minutes
White · Purple
Thioridazine
Source text (English): purple red
No reaction
Tianeptine (Stablon, Coaxil, Tatinol)
Source text (English): no color change
No reaction
Tianeptine (Stablon, Coaxil, Tatinol)
Source text (English): no color change
No reaction
Tianeptine (Stablon, Coaxil, Tatinol)
Source text (English): no color change
White · Yellow · Orange · Red · Brown
Tramadol (Tramal, Tadol, Tramacur, Tramundin)
Source text (English): yellow > red / brown
White · Green · Brown · Black
Tramadol (Tramal, Tadol, Tramacur, Tramundin)
Source text (English): geenish grey
Yellow · Purple · Black
Tramadol (Tramal, Tadol, Tramacur, Tramundin)
Source text (English): light purple / blackish
White · Yellow · Orange · Brown
Tramadol (Tramal, Tadol, Tramacur, Tramundin)
Source text (English): orange/brown
White · Green
Tramadol (Tramal, Tadol, Tramacur, Tramundin)
Source text (English): muddy green
White · Orange · Brown
Tramadol (Tramal, Tadol, Tramacur, Tramundin)
Source text (English): orange / brownish
No reaction
Trazodone
Source text (English): no color change
No reaction
Trazodone
Source text (English): no color change
No reaction
Trazodone
Source text (English): no color change
White · Orange · Brown
Trenbolone Acetate
Source text (English): orange>dark brown
Yellow · Brown
Trenbolone Acetate
Source text (English): dakr brown/black
White · Brown · Black
Trenbolone Acetate
Source text (English): brown>black
White · Brown
Trenbolone Acetate
Source text (English): brown / dark brown
White · Yellow · Orange
Trenbolone Acetate
Source text (English): faint orange
White · Orange
Trifluoperazine
Source text (English): orange
White · Yellow · Brown
URB-597
Source text (English): yellow / brown
White · Pink
Xylazine
Source text (English): pink
White · Yellow
Xylazine
Source text (English): light yellow
Yellow · Brown
Xylazine
Source text (English): red brown
White · Orange · Brown
Xylazine
Source text (English): instant reddish brown
No reaction
Xylazine
Source text (English): no color change
Orange · White
Xylazine
Source text (English): white precipitate (borderline; no blue)
Pink · Blue · Pink
Xylazine
Source text (English): blue > pink and blue layers (immediate)
White · Yellow
Xylazine
Source text (English): yellow
No reaction
Xylazine
Source text (English): no color change

No reaction
Zolpidem (Stilnox)
Source text (English): no color change
No reaction
Zolpidem (Stilnox)
Source text (English): no color change
No reaction
Zolpidem (Stilnox)
Source text (English): no color change
No reaction
Zopiclone/Eszopiclone
Source text (English): no color change
No reaction
Zopiclone/Eszopiclone
Source text (English): no color change
No reaction
Zopiclone/Eszopiclone
Source text (English): no color change
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.