LENGTH OF TIME DETECTED: Blood: Frequent User: Delta-9-THC = 4-8 hours post dose, then possible "baseline" level of 0.3 to 0.4 ng/ml. 11-nor-9-carboxy-THC = approximately 2 weeks + depending on past frequency of use. Infrequent User: Delta-9-THC = 3-4 hours post dose 11-nor-9-carboxy-delta-9-THC = 2 -3+ days post dose What the fuck does all of this mean exactly like why are there three different names tested for with THC and which one is the right detection time for Marijuana use? Does this mean that some blood tests can find traces up to 2+ weeks if theyr looking for 11-nor-9-carboxy-THC? What the FUCK does all of this mean, please help me out here, freakin out man and i just wanna chief.