Often asked: What Can Cause A False Positive Hair Follicle Test?

Can a hair follicle test be wrong?

A worry for anyone undergoing an illicit drug screen – whether it be a urine, hair, saliva or blood test – is the possibility of a false positive drug test. In fact, some data suggests 5 to 10 percent of all drug tests may result in false positives and 10 to 15 percent may yield false negatives.

How do I dispute a false positive hair 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.

Can a hair follicle test detect infrequent use?

Regular drug users may hate this. If an individual is an infrequent or first-time drug user, a hair follicle test may not detect drug use a few days before the test because it takes time for hair to grow. Employers need to weigh that fact into their choice of a drug test method.

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What is the cutoff level for a hair drug test?

Cutoff levels are the detection thresholds for compounds that are set on the testing instrumentation. To use the cannabinoid example, our screening cutoff level for the cannabinoid drug class in a hair specimen is 1 pg/mg.

What happens if a drug test comes back positive?

If the test results in a positive reading, meaning there is drug residue in the body, the results are forwarded to a medical review officer, who reviews the results and looks for any possible valid medical explanation for the results.

What shows up in a drug hair test?

Hair drug tests typically test for cocaine, marijuana, opiates, methamphetamine, ecstasy, and PCP.

How do you detox your hair?

How to Detox Your Hair at Home

  1. Mix ½ cup of bentonite clay powder with ½ cup of aloe vera gel and ½ cup of apple cider vinegar.
  2. Apply throughout the hair making sure every strand is covered.
  3. Pop on a shower cap and leave in for 20-30 minutes.
  4. Rinse thoroughly.

What if hair is too short for drug test?

If head hair it too short, body hair can be used. Although there is no released research or tests, it is suspected that the body hair test can be detected much further back, as far back as a year. The results will not and can not detect the specific day of drug use.

Does hair dye affect drug test?

Whether you wash your hair, dye or bleach it, or use styling products, it will not affect the hair follicle drug test’s accuracy. It will show any drug use within the last five to 90 days.

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How far back does a DISA hair follicle test go?

Hair Testing – Hair testing has a longer detection window for drug use spanning up to 90 days, according to Psychemedics, an industry leader in hair testing technology. It will not detect current use, only past, and does not detect alcohol.