i have heard some places that quickfix can be detectable by GC/MS at Labcorp.
This is False. The GC/MS is not used to detect "non-human" samples.
The GC/MS is used only to confirm drug positives and two types of adulterants: Pyridine and Glutaraldehyde. Non-human samples are determined by checking the creatinine and specific gravity. Creatinine is checked using colorimetry (the typical validity dipstick/cup/cassette) while Refractometry is used for checking the specific gravity. Colorimetry can also be used for SG as the initial analysis.


Any exercise should be curtailed at least 3 days before the U/A. That way you wont be releasing a bunch of THCA into the bloodstream, which will end up in the urine to be detected.

Sweating is hardly of any help because very little THC is excreted via sweat. Sweating is the bodys reaction to high temperature and/or nervousness - not a reaction to calories being burned. You can sweat enough to fill many buckets, yet the amount of THC being excreted would still be miniscule. The rest are being excreted via the urine and bowels.
Burnt Toast Reviewed by Burnt Toast on . Is Sweating & Excercise Before Test Bad? Hi There, I took a drug screen on July 22nd about a week ago. I had been clean about 3 weeks after being a fairly heavy smoker,daily. Anyway, I had done one homescreen a few days prior to test, and test result was a faint negative. I also do 90 minute hot yoga classes 3-4 times a week, which most likely accelerated the body getting rid of metabolites. Drank plenty of water obviously to stay hydrated as well. So maybe I got to cocky, and I went and tested natural a couple of hours after Rating: 5