Medical Testing Question....

[TexasTowelie]

4. Okay, you would ask me that question.

I guess that I know why.

I did take a course in adsorption spectroscopy in college and while I can not say definitively answer, my hunch is that the answer is yes. Although the THC should metabolize into various organic compounds there would also be sufficient amounts of residual cannabinoids that could be detected with the right instruments, particularly if using GCMS (gas chromatography/mass spectroscopy). The mass spectroscopy portion of the test would provide the molecular weight of the residual cannabinoids.

Here is an article that might be of interest that supports my reasoning and also provides some answers to your more generic questions:

http://chemistry.about.com/od/medicalhealth/f/What-Is-The-Chemical-Composition-Of-Farts.htm