Helpful tips / 23/06/2021

How far back can they go on hair follicle test?

90 days
How far back can a hair drug test detect drug use? Hair drug tests have the longest detection period, and can typically detect drug use for up to 90 days.

What happens if you fail a hair follicle test?

Will I fail a hair follicle test if I smoked weed twice, once 60 days ago and once 30 days ago? Whether you have smoked once or twice, 95% chances are that you will fail the drug test. In case you are a light or infrequent user, the amount of THC required to trigger a positive result won’t be met.

How much marijuana does it take to fail a hair follicle 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 accurate in detecting marijuana.

How long can a hair follicle drug test go back?

They can also provide synthetic urine or urine collected from another individual. While urine drug testing can typically look back a week, hair follicle drug tests have a detection window of 90 days. Depending on the length of the hair collected, it can even go back as far as a year.

Is there a way to cheat the hair follicle drug test?

Fact: There is no proven way to cheat a hair follicle drug test using hair products. Special hair products on the market — like shampoos — will claim to help you pass a drug test by cleansing your hair and hair follicles of any substances you’ve used. However, this claim is 100% false.

Can a person fail a hair follicle test twice?

Will I fail a hair follicle test if I smoked weed twice, once 60 days ago and once 30 days ago? Hair drug testing goes back much, much longer than urine drug testing. In fact, when you ingest drugs, it goes into the hair follicle, and then into the strands themselves, where they stay, pretty much forever.