ok just taking a wild guess here, but im guessing that the one test goes for all two (and there are only two) of those.
and that you have to wait approx 2 weeks to get tested clean for the test, assuming you are a frequent user (because your on cannabis.com).

anyway...blood test?
harsh.
Psyomn the POTHEAD Reviewed by Psyomn the POTHEAD on . Blood Test Detection Times! 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 Rating: 5