Frequency of false positive urine drug tests?

Hello,

We often hear that people should refuse urine tests during traffic stops because they are not very accurate and can easily produce false positives. Does anyone know the figures for this rate of false positives?

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vanOoijen
1 year ago

Unfortunately, I do not know whether there are statistics.

I don’t think so.

A blood test is definitely safe and accurate.

This is the alternative if you refuse other tests.

aXXLJ
1 year ago

I have read from up to 30% falsely positive and falsely negative drug test results – just as wrong interpretation of the respective results.
This sounds credible in view of the fact that it is (cheap) drug-snelltests and Corona-snelltests shine with even higher percentages:

Wrong-positive quick tests: Why many results are just wrong – FOCUS online