There drawing blood to check for liver and or kidny damage stuff like that.
So there not checking your blood for drugs/Slim chance anyway.
I would not use detoxints.If you can just get the Quick Fix 4.0
Make sure its at temp and all that.See my other threads about that.
The thread nervous about quick fix has most of that on it.But if you can't find it I will post it again for you.
http://www.detoxforless.com/pass-a-d.../fake-pee.html
The Quick Fix 4.0 synthetic urine contains all of the constituents being tested in human urine, such as creatinine, ph, and specific gravity. My periodic home tests of the QF (using the Urinecheck 7 adulterant test stick) bears all of this out as proof. These same test sticks can be found at http://www.meditests.com/adulteration-test-kit.html
second hand smoke won't show up unless your taking in shotguns.
If it were me tho and i was trying to get clean I would not be around to much second hand smoke.