* One Step * Drug Screen The Test Medica Drugs of Abuse test is only the first step in a two-step process for determining the presence of drugs of abuse. If you get a "preliminary positive" test result when you use this product, we recommend that you send urine to a certified laboratory, which can test the urine again with a more accurate and reliable test. The second test is called confirmation testing, which is most often done using a test called gas chromatography/mass spectrometry. We recommend that you consult with your doctor or another qualified professional to help your understand test results and to address problems such as drug use. Controlled substances and their mandated allowable levels in urine as specified by the National Institute on Drug Abuse (NIDA). Cocaine 300 ng/mL Marijuana (THC) 50 ng/mL Heroin/Opiates 2000 ng/mL Methamphetamines 1000 ng/mL Amphetamine 1000 ng/mL