Quick Answer: What Can Cause A False Positive On A Urine Drug Screen?

How common is a false positive urine test?

False-Positive Results.

In some cases, a drug test may report the presence of illicit drugs, although none were taken.

While this is not common, no test is 100% accurate.

Lab errors account for some of the mistakes, but most false-positives may be attributed to over-the-counter drugs and foods that can affect the test..

What does a false positive urine test mean?

What is a false positive? A drug screen tests for the presence of certain illegal drugs and commonly misused prescription medications. A false positive means that the test has detected the presence of these substances in your body when you haven’t actually taken them.

How do you fight a false positive drug test?

The best way to contest false-positive results is to reach out to your pharmacist and ask if prescription drugs and OTC medications you take on a regular basis can cause a positive drug test result. Ask if the pharmacist can provide written documentation to this effect and bring a copy to the test site.

What is the percentage of false positive drug tests?

Drug tests generally produce false-positive results in 5% to 10% of cases and false negatives in 10% to 15% of cases, new research shows.

What could cause a false positive?

You could have a false-positive result if you have blood or protein in your pee. Certain drugs, such as tranquilizers, anticonvulsants, hypnotics, and fertility drugs, could cause false-positive results. If you get a negative result, you’re probably not pregnant.

What can cause a false positive for coke?

Certain occupations involving excessive and/or frequent exposure to cocaine, such as crime laboratory personnel or providers administering cocaine during (ENT) procedures, may result in cocaine detection on a urine drug test.

Can you sue for a false positive drug test?

Drug testing laboratories have, until recently, been largely unaccountable for erroneous test results. In recent years, however, lab have increasingly been taken to court and found liable for damages. Many cases of drug testing laboratories successfully being sued are related to termination of employment.

Can you ask for a retest for drug test?

Candidates may request a retest of the original urine sample within five working days after notification of a positive test result. This retest is at the expense of the candidate, unless the original test result is called into question by the retest.

How much water does it take to dilute a urine test?

You need to produce at least 45 milliliters for the sample.

What happens if your drug test is positive?

If your results are positive, it means one or more drugs were found in your body above an established level. However, false positives can happen. So if your first test shows that you have drugs in your system, you will have further testing to figure out whether or not you are actually taking a certain drug or drugs.