Are there any legal substances that can create a “false positive” for illegal drug usage?
Here are some of the more often detected substances, which can affect drug testing: • Over-The-Counter Medications – Some medications contain high concentrations of decongestants that will produce a positive result for amphetamines. Appropriate confirmatory testing will detect when the drug is a decongestant or an amphetamine. • Poppy Seeds – Frequently found on bagels or other baked products, poppy seeds do contain sufficient amounts of morphine to sometimes produce a detectable test result. This can be resolved by using a test that will detect a substance in the urine that is only found in heroin. • Secondhand Marijuana Smoke – Passive inhalation of marijuana smoke is frequently claimed as a reason for a positive urine test. Yes, passive inhalation of marijuana smoke can be detected but studies show it is highly unlikely that a nonsmoking individual could unknowingly inhale sufficient smoke by passive inhalation to result in a high enough drug concentration in urine for detection at
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- Are there any legal substances that can create a "false positive" for illegal drug usage?
