What Can Cause False Positive For Cocaines?
What Can Cause False Positive For Cocaines? Barbiturates. Benzodiazepines. Methadone. LSD. Steroids. MDMA (Ecstasy) Opioids (oxycodone, hydrocodone) What supplements can cause a false positive drug test? Vitamin B supplements. Riboflavin, also known as B2, is found in hemp seed oil and may return a false THC (marijuana) reading. CBD (cannabidiol) … Poppy seeds. … Mouthwash.