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Doctor insights on: How Long Does It Usually Take To Get Back A Hair Follicle Test Result

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Dr. Otto Placik
Board Certified, Plastic Surgery
28 years in practice
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How long does it usually take to get back a hair follicle test result?

How long does it usually take to get back a hair follicle test result?

FUE graft testing: Hair follicle tests can be available on the same day if performed at a advanced facility. ...Read more

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Dr. Bret Boyle
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Follicle (Definition)

An ovarian follicle contains a hollow ball of cells with an immature egg in the center. It is a structure within the ovary containing the egg that ...Read more


Dr. Lester Thompson
Board Certified, Pathology
27 years in practice
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Dr. Bret Boyle
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Dr. Alan Wartenberg
Board Certified, Addiction Medicine
43 years in practice
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How far does the testing for a hair follicle and nail drug test go back? I am getting conflicting answers on both tests. I have been told 90-120 days or longer for hair follicle depending on length of hair and up to 1 1/2-2 1/2 years for nail testing.

How far does the testing for a hair follicle and nail drug test go back? I am getting conflicting answers on both tests. I have been told 90-120 days or longer for hair follicle depending on length of hair and up to 1 1/2-2 1/2 years for nail testing.

Varies: The hair testing numbers are about right, with hair growing about 1/2 inch per month, and the average length of hair tested being 1 1/2 inches, which is about 90 days. Nails give 4-6 months at usual lengths. If you never cut them, or have very very long nails, you could get 1-2 years, but that is not common. ...Read more

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Dr. Gregory Hines
Board Certified, Family Medicine
18 years in practice
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86 days clean. Will i pass hair follicle test? Also how long till you receive results?

Hard to say: Typically, a hair test goes back 90 days, but it depends on how fast your hair grows. They are looking at 1 1/2 inches of hair, closest to the scalp. Incidentally, you should not avoid it by shaving your head. They would just use some other hair. And if they do, it is pretty obvious that you are trying to hide something. ...Read more

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Dr. Bret Boyle
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Dr. Dariush Saghafi
Board Certified, Neurology
27 years in practice
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How long does cocaine come out of a hair follicle and how far back do applicants for an rn get tested ?

How long does cocaine come out of a hair follicle and how far back do applicants for an rn  get tested ?

How far BACK?: Maybe I'm missing something but I can't for the life of me figure out what "how far back do applicants for an RN get tested?" means? Unless you're Marty McFly then, nobody can be tested for ANYTHING required by a job application process any further BACK than the 1st day an application for a job requiring drug screening is made. Otherwise, you'd be testing people just THINKING about a certain job? ...Read more

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Dr. Michael Tomeo
Board Certified, Dermatology
32 years in practice
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Dr. Jovita Anyanwu
Board Certified, Internal Medicine
24 years in practice
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Scared to take a hair follicle test been clean for 8 or 9 months got my cdl and been clean ever sence is it still possible to fail the test?

Be rest assured: if you have not used in 8 months then the result will be negative. Sensitivity starts to decline after 90 days ...Read more

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Dr. Heidi Fowler
Board Certified, Psychiatry
19 years in practice
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Dr. Heidi Fowler
Board Certified, Psychiatry
19 years in practice
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Dr. Christian Assad
Board Certified, Cardiology
8 years in practice
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how long will pot show up on a hair follicle test? I smoked once or twice a week for a couple months. I stopped 3 months ago.

"POT": The standard detection window for the hair test is 90 days. Because hair grows about 1.5 inches (3.8 cm) in 90 days, hairs with a length of about 1.5 inches (3.8 cm) are targeted for cutting. Longer hairs will give a longer window of detection. ...Read more

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Dr. Bret Boyle
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