How common are false positives in drug screen testing?

I had a false positive in my drug test.

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It's not all that common but it has been known to happen. Poppy seeds can alter tests because Opium is made from the same plant. Many over the counter drugs can alter tests. It depends what you are being tested for. You can find things that cause false positives online.

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Answer by RRGKK (412)

More common than testing professionals like to admit. They have greatly improved the process, but false positives do occur. Be sure to bring any medications taken to a retest/appeal.

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