Drug Test 3 - Panel Screen Urine Kit THC/COC/OPI is a great value combination test, FDA approved urine one-step, rapid drug test kit, detecting 3 most common drugs: Cocaine, Marijuana, Morphine and Heroin in one urine sample. This 3 panel drug screening device offers the ultimate in combination and cost. Drug Test 3 - Panel Screen Urine Kit THC/COC/OPI could detect drug use in a time frame of drugs and their metabolites presence in urine according to scientific researches. Simply remove the cover and dip into the sample to screen for the 3 drug groups. Drug Test 3 - Panel Screen Urine Kit THC/COC/OPI supplied with full and easy to follow instructions. Results in 5 minutes. 2 Red Lines = Negative. 1 Red Line = Preliminary Positive.