Over-the-Counter Drugs

Cold remedies, diet pills, hay fever remedies and pain relievers: In blind testing, decongestants and many diet aids resulted in false positives for amphetamine use in one third of all test samples given to 40 leading substance testing laboratories. There are more than 300 over-the-counter drugs that can cause false positives on the EMIT, and new drugs being introduced every day.

Ibuprofen: Ibuprofen is a common pain reliever that, even in low dosages, can cause a false THC positive on the EMIT. This has supposedly been corrected.

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