Quote Originally Posted by Burnt Toast
How do you know what your readings were? Home tests, being assays, lack the ability to yield quantitative values.


That means you will be taking an initial assay screen with a 50 ng cutoff limit. If the sample fails the initial assay, then it undergoes the confirmation GC/MS with a 15 ng cutoff limit and a quantitative value will be provided. Samples that pass the initial assay screen wont undergo the confirmation test.

Even though their cutoffs numerically differ, a 50 ng assay is functionally equivalent to the 15 ng GC/MS. The numbers differ because the assay recognizes all 31 metabolite concentrations combined, while the GC/MS only recognizes one metabolite concentration (THC-COOH).
For more info on this, read my post in this thread: http://boards.cannabis.com/drug-test...test-help.html
I mailed the at-home drug test off because I couldnt tell if their was a line there or not on the test and thats what the results came back, it said POSITIVE d9 THC (or w/e the big term is) 23 ng/mL so where do i stand?