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DrRussMd, Board Certified Physician
Category: Drug Testing
Satisfied Customers: 64628
Experience:  Board certified internal medicine doctor years of experience addiction and all other medical problems
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It has been 11 months since I have smoked marijuana. I just

Customer Question

Hi. It has been 11 months since I have smoked marijuana. I just used arm pit hair for a drug test. I have never shaved my arm pit hair. Does the hair test detect drugs from close to a year ago or 3-9 months or so? If the arm pit hair used doesn't hardly grow and it is the same hair from years ago when I was smoking marijuana, will the hair follicle test be positive? Does the testing reveal when the drug use occurred approximately?
Submitted: 1 year ago.
Category: Drug Testing
Expert:  DrRussMd replied 1 year ago.


The hair test is going to generally detect up to 90 days.

It will not still be positive after 90 days, even with armpit hair.

The test never reveals exactly when the use occurred.

At 11 months, not a concern.

OK, so that is an initial answer….

Please use reply to expert if you have further questions. When you are ready, please click a positive rating [hopefully excellent]. If you forgot something, come back. I am here daily.

Expert:  DrRussMd replied 1 year ago.

Note that another expert, who happens to be a drug treatment specialist, has agreed.

You are in the clear.

The cells in armpit hair are replaced, just as with all hair.

Please click a positive rating.