Originally Posted by Jah-Red

is there one.... I am told they are different?

Originally Posted by Lolo69

I've been told by someone very knowledgeable on this forum that one (the immunoassay) is no tougher than the GC/MS.

The immunoassay looks for all THC metabolities, while the GC/MS targets just one type of THC metabolite, like N2 said.

From what I understand, the GC/MS is usually only performed when to confirm a positive result on the immunoassay. If you're neg on the first part and your urine passes an integrity check for creatinine, specific gravity, adulterants (from detox drinks), etc., you're good to go.

I read how a GC/MS test is performed and it sounds pretty darn time consuming annd expensive. Quest and LabCorp would rather overcharge companies and other hysterical shrews millions and millions of dollars for dip stick tests, than take up their valuable time and equipment confirming negative results.

Originally Posted by Jah-Red