Color tests are a key tool for the rapid and simple identification of seized illicit drugs. This chapter outlines a series of color tests that can be used for the preliminary identification of new psychoactive substances such as cathinones, piperazines, tryptamines, and amphetamine-type stimulants.
Keywords: Cathinones; Color test; Illicit drugs; NPS; New psychoactive substances; Novel psychoactive substances; Piperazines; Preliminary test; Presumptive test; Tryptamines.