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.