Hair Test THC false-positives

[botas]

So SWIM is about to get a hair test he just found out, and is pretty screwed. He does not have enough time for mail order shampoos and what not and decided on going with the forever famous "false positive" approach. He knows there are false positives for urine testing, but anyone know anything that causes a false positive (or better yet, negative) that shouldn't be too hard to get?

[chrisn]

It seems much more likely that being in the presence of smokers, but not partaking, could result in a false positive from the exhaled smoke coming in contact with SWIY's hair. But AFAIK exhaled smoke contains very little THC. Anyone know more information?

You could bring this up and try to influence them to use a blood or urine test to confirm their results, but I don't know who's testing you and what their procedures are.

[botas]

It is my father, who wants to make sure I'm clean again before he goes and gives me a job... this is kind of important, since the family hookup sure would be nice right about now. He wants to do a hair test, and I dont think im going to be able to bullshit my way out of it. The 2nd hand smoke thing would be a good idea, but erowid says THC is all absorbed from the smoke upon hittin it, and i have a good feeling the testing center would know this as well.