Do blood drives check for marijuana in the blood when a person donates?
Marijuana is not a routine test when someone donates blood and there is no reason it should be. What is tested for and rightly so things like the AIDS virus and Hep C. Regarding assay’s to detect the presence of Cannabis, Blood is not the specimen of choice for such a test, urine is. Even if they decided to assay all blood in donation for cannabis the cost would be astronomical for such a routine test for no reason that makes sense. You may be assayed for the presence of illegal substances as a condition of some employment offers but again they may use urine or mouth swabs for some substances. As far as your cousins fear that he recently smoked, there are unique variables regarding cannabis which include how much consumed, smoking habits and THC amount since it does in a sense stay longer within the body’s “Fat” cells. Depending on the sensitivity of the cannabis assay a long time daily smoker may show positive results long after consumption stops. Some routine tests are reported as ei
