Thanks for the info about the consent law. Unfortunately the only state I saw in that book was Virginia, and I do not live there.

I looked into LabCorp further (http://www.labcorp.com/pdf/doa_reference_guide.pdf), and apperently the confirmation cut-off is 15 ng/mL (as opposed to 50 ng/mL?). Does the lower number mean you're more likely to pass? I don't know how it works.

For what it's worth, I am a weekend smoker who has been clean for 10 days. I am not a heavy person, although the weed I smoke is very potent. I guess I would consider a moderate smoker (I don't smoke everyday anymore and haven't in years) and the detection time according to the Labcorp PDF link is 5 days. So according to that chart I should be alright, I just don't know how accurate it is.