GC/MS initial lab testing for probation. PLEASE HELP.

The last time I actually smoked weed was in the middle of July, even then it was only a few hits. There have been at least 2 occassions in September when I was around other people smoking weed. I didn't get a contact high, but I definitely breathed some in. The last of these instances was about 8 days before my urine analysis. Because i'm on probation, my PO sent me to a lab to have the UA done. I watched them seal it, and signed a paper for it to be analzyed with GC/MS testing. I understand the cutoff level is 15ng, and that's what worries me. I took a home test, and passed but the GC/MS testing obviously has a much lower threshold cutoff. I weigh around 136 lbs and I have a pretty fast metabolism. I don't really work out that much, but I'm ip walking around constantly. I didn't do any dilution methods because I assumed it would be a simple dip stick test. Do you think I will pass? PLEASE HELP. I'm seriously a nervous wreck over this, and I need some encouragement.

Dont let the differing cutoffs worry you. Read post #4 of this thread:
http://boards.cannabis.com/drug-test...ml#post2215489

And more on the subject can be found by doing a forum search with the terms "functionally equivalent metabolite concentrations"

aaaaaaaaahhh you got nothin to worry about.