Quote Originally Posted by KrissyKay
You said

If you passed 8 days ago your level has probably dropped in half because the half-life of THC is anywhere from 0.8 days to 10 days depending on the person.

So if that is the case, this should be correct.... If my level was under 50 8 days ago it should be under 25 today if not lower.
Now you are getting it. If you got a line on your home test then you had to be at least 49.9999 or less so in 8 days (unless you THC-half life was 9 or 10 days) then you have gone through at least one half-life so that would be 49.9999/2 or 24.99995 or lower. This is measuring a possible 31 metabolites of THC. When it goes to GC/MS they are only looking for 1 metabolite while immunoassay was looking for 31 metabolites so you can't just look at "well the difference between 50ng and 15ng is 35ng." It usually takes 2-3 days to get the results.