THC is stored in fat cells, as we know. However, what we must remember is that fat cells do not go away but rather shrink. Personally, I have never known of anyone to drop dirty after 30 days. I'm sure it has happened, but it is probably more the exception than the rule. A basic rule of thumb is one month clean equals a negative/clean test.

Unfortunately, no drug screen can determine abuse. They can only determine use. Therein lies one of the many problems with them. In the end, this is all the result of greedy insurance companies.

Karl