Thanks for the reply...
I've been told not to eat or drink anything for 8 hours prior to the exam. I'm supposed to get a blood test, urine test, and chest x-ray.
Don't think it's possible to drink the mixture right before the test.
I'm very new to this so I would really appreciate all the advice I can get.
I smoked for the first time an entire joint (not mixed with any tobacco) mid April followed by a few drags the beginning of May (this time mixed with tobacco). I am going to be tested (urine and blood) for a new job...