4-FA Test Kit - Purity Test Kit for 4-FA
Find 4-FA purity test kits and reagent tests selected for fast substance identification and cleaner checking. First popularized in Dutch party scenes circa 2010; banned in Netherlands May 2017 after several fatal hypertensive crises and strokes. Street samples vary significantly (60-140 mg per tablet). Users experiencing severe headaches after use should seek immediate medical evaluation. Insufflation is particularly caustic and painful; oral route preferred. DEA announced intent to schedule as Schedule I in United States (June 2025).
Drug purity testing kits come in 3 types: reagent tests, TLC and test strips. Use a multi-reagent kit to identify most common substances. Pair reagents with a TLC test kit to discover number and amount (%) of almost all ingredients. Use test strips to rule out fentanyl, nitazenes or xylazine.