Test labs should be checking the moisture content and normalizing the results but I have no actual proof that they do this 100% of the time as a normal part of preparing the samples. I could see them hand waving this step as it is a time consuming task, as we all know.
Don’t overlook the possible CBG conversion. CBG is not utilized in calculating THC/CBD but CBG can decompose into either over time.
Haha. Not at all. I saw the title and said, ‘cool, what going on in there’.
For the price of a really really decent large home grow, one could invest in a GCMS and make decent coin running such tests. Just sayin’…
You can easily spend $35k on a decent, working used system. Of course, don’t forget about the columns or consumables. And not everyone knows how to operate a GC/MS. Just sayin… 
I work with the companies that make these and other analytical instruments. Managing and repairing them are other significant cost factors beyond the the cost of acquisition which also needs to be considered.
If all you want to know is the potency and have money and lab skills available, your best instrument is either HPLC or UPC2.
If you want to know the terp profile, I might suggest using HS-GC, which is basically GC with Head-Space Autosampling.
Oh just me trying to learn something 
gonna have to
re-read your thread a few times to sink in. Thanks for coming and enlighting me 
oh this is what i forgot:
Buds optimal jar cured in 62% stable will be 12% moisture content.
So if you have super dry bud shouldnt it be like 50% thc at that point?
So it’s two different tests? So 120 bucks a sample. Not 60.? Is this in Canadian loonies and twonies. I assume so. Lol. Sorry I just woke up.
you can get one of the tests done for 60 and both for 120 there are a ton of different tests you can get added on but you could get just your basic testing for thc done for 60 or just the terpenes for 60. And yes loonies and toonies lol