Those test don't actually test for THC or CBD, etc, but rather for the metabolites of those compounds.
I assume your body metabolizes raw cannabis but I'm not sure it could metabolize the THC if it hadn't been decarboxylated first.
Interesting question.
I disagree- They test for THC...and if they are scrutinizing...they can detect the absence of CBD's..that is how they can tell the difference of smoking weed, and taking Marinol-- Marinol has no CBD's--