How To Read A Urine Drug Test Cup. Shop drug test cups and learn how to read a drug test cup for urine drug testing. Do not read the cup 10 minutes after the sample is collected as a result is no longer reliable.
Frequent users develop a tolerance for the drug which can lead to addiction. Presumptive positive results will show only one line in the control region. Cocaine (coc) cocaine is a stimulant that’s highly addictive.
Please be sure to read the results within 5 to 10 minutes.
Presumptive positive results will show only one line in the control region. Start the timer immediately after use. The results are read for each numbered line below the (c) line and the number corresponds to the drug letters printed below the window. If a test fails to show a line in the control region, this indicates and invalid test result.