Urine tests for opiates could possibly be performed to determine illicit drug use and for professional medical motives like analysis of clients with altered states of consciousness or checking efficacy of drug rehabilitation attempts. The preliminary identification of opiates in urine involves using an immunoassay screening and thin-layer chromatography (TLC). https://juliustknmw.wikifordummies.com/8373820/the_smart_trick_of_buy_percocet_online_that_nobody_is_discussing