Whatever research youve claimed to have read, its wrong. THC enters the body in its ingested form and exits the body as 31 different metabolite concentrations, the most prevalent form being the THC-COOH concentration.

Immunoassays, being a non-selective methodology, recognize all 31 metabolite concentrations combined, while the GC/MS, a selective and more accurate (rather than "sensitive") methodology, recognizes only ONE metabolite concentration - the metabolite concentration that matters the most - the THC-COOH metabolite concentration. Thats why the GC/MS carries a numerically lower cutoff threshold. The cutoff has to be set at a lower number in order to make the two types of tests functionally equivalent.

People that claim that the GC/MS is a "more sensitive" test are only compounding the hysteria that less informed folks have towards the GC/MS.

While I salute NORML for their efforts in their drive towards across-the-board MJ legalization, their info on drug testing leaves a lot to be desired. Perhaps they need to just stick with their drive towards legalization.