How can a Hair Follicle test if u smoked marijuana?

Question

I mean, what if u went to a concert last week with marijuana in the air? does shaving my head help at all?

Answer 1

The marijuana you smoked will show up in your hair, your skin, your blood and your urine. You can't just get it in your hair from the air. You've already smoked too much if you believe that.'

Answer 2

2nd hand smoke will not equal you having a positive drug screen. the hair follicle test uses about 1 inch of hair from the root and check for the basic drugs. [ 1''=1 month, 2''=2 months, etc.] Shaving doesnt help because if you show up for a hair follicle test and you are bald then they have other options as to where to remove hair from ie: arm pits, legs and usually if you are completely bald everywhere then the tester can use nail clippings.
if youre being tested for a job, then the person/company who is performing the drug test will usually always call the potential employer and let them know that "you" are bald everywhere and ask them if there is another method they would approve of using ie: blood, saliva, urine.
Basically if you used drugs...and a hair follicle test is being perfomed, it will be found. second hand smoke will not be enough drug in your system to cause a positive result.

Answer 3

You must've inhaled a bit too much because you're way to paranoid. Most companies/schools don't test hair follicles because it's much more expensive than urine or blood testing. If you shave your head, then where are they going to get a sample from? Hair follicles, store everything up to a point, so once your hair grows out and is cut off it's no longer in your system. Besides that if you weren't toking the cheeba yourself or having it blown in your face it might show up in trace amounts, but below the level for a positive test. If you don't have a drug test coming up, don't sweat it.

Answer 4

Well after a while what ever drugs are in your system will show up in your hair becasue they are in your system. I do not think shaving will help, because it is in the root. if you were doing drugs a long time what ever is in your hair when it grows will show, I do think they test the root though.