DOT Drug Testing: Urinalysis Or Hair Follicle?

Geo, I dont know where you got the five year info from but to the best of my knowledge, a hair test can only be traced back 1 year... You hear rumors about companies saying they can go back 2 years and such, this is a scare tactic they use to see who is gonna look guilty. Most companies only look back 90 days... My cousin had to get one done for a security job, not like a mall security or anything but a legit security detail. I myself have a person who is close to me who also said the same thing. I have done research on my own and the most common answer I see is 1 year.

I could be wrong (according to my g.f. its all the time) but I think I am pretty solid on this. I will research again to be doubly sure....

Wikipedia says 90 days...

The Hair test only goes back 90 days 99% of the time for new truck drivers. Hair grows at @ 1/2 inch per month. If you cut all of your hair to 1.5 inches you will be fine. That will be enough for the 90 day requirement. Hair shows positive for as long as the hair is but 90 days is the standard test because it costs a lot more to go further plus INS companies that set the requirements for trucking companies. If you quit using today and shaved your head etc you would be clean in 90 days for any test given. ETC. The test can not go further back if the hair is 1.5 inches. If you are in a hair band and smoked weed 5 years ago you could be tested positive... :-) Short hair and stop using any one of the 5 drugs they test for and you will be fine. Drugs and Driving do not mix.. I am a new driver but I am also a pilot for the past 23 years and know all about drug testing. Never used drugs and when flying the rule is 8 hours between bottle and throttle too.

Fancy a full body shave? Don't forget to pluck the eyelashes, or that nose hair.

Sorry Steve but if you are sent for a hair drug test but have no hair at all you can't do the test and its the same as a refusal.

What about people who have that rare disease where they have no body hair? lol I dont even know if that exists... but I guess it could???

What about people who have that rare disease where they have no body hair? lol I dont even know if that exists... but I guess it could???

Yes there is a rare disease that causes humans to be completely hairless but in that case you would have documentation from your doctor to prove it.

No ****! I was just making that up. Hey you learn something new everyday!

Brett here at JB Hunt they do hair drug test and UA drug test right when your hired on but everything after that is just UA's for the random test.

Alopecia areata... love google

Does it say how long the hair has to be? It grows around 1/2 inch per month. Better than waiting 5 years, or whatever.

Atleast 1.5 inches