Can a hair follicle test be wrong?

GC/MS results are more expensive and take longer to give results, but they rarely produce false positives. Both types of tests can create a false negative, which is when the test reports a negative result even if there is drug use.

Can a hair follicle test come back inconclusive?

Inconclusive. If the hair sample is contaminated or something goes wrong during the testing, the laboratory may declare the result to be inconclusive. In these cases, a person may need to provide a new hair sample to the laboratory.

What causes false positive hair follicle test?

An evidentiary false positive that is the result of exogenous exposure to drug(s) in the environment. The drug positive result is not due to the ingestion or use of drug by any route of administration. Drug(s) in sweat or sebum from a source other than the user contacting hair to cause a drug positive result.

What if my drug test comes back inconclusive?

Inconclusive/invalid– this means that the test detected no amount of the drugs tested for. With an inconclusive result, your employer may choose to have you retake a drug test.

Can you fail a hair drug test?

So, in the above case, you definitely have a bright chance to survive your hair drug test. However, if you are a heavy user then you are going to fail your drug test. Only 20 to 50 nanograms per milliliter of THC is required to test positive for the usage of marijuana for the urine drug test.

Can a hair follicle drug test detect marijuana use?

In other words, if your hair was exposed to marijuana, but you did not smoke or ingest it, your test would come back negative. Many employers use the hair follicle drug test for prospective employees or randomly for existing employees. These tests can detect drug use up to three months prior to the test.

How much THC does it take to make you fail a drug test?

Only 20 to 50 nanograms per milliliter of THC is required to test positive for the usage of marijuana for the urine drug test. Whereas, hair drug tests are able to detect even 1nanograms per milliliter, making them much more accura Whether you have smoked once or twice, 95\% chances are that you will fail the drug test.

Do hair follicle shampoos beat hair drug tests?

Whereas, hair drug tests are able to detect even 1nanograms per milliliter, making them much more accurate in detecting marijuana. So, if you are a heavy user then you should consider making use of a hair follicle shampoo to beat your hair drug test.