Yes, you can donate blood if you smoke or consume cannabis. The recipient of the blood will not get high, another common MYTH. All donors go through the same health If you use cannabis, do it safely Harvard Health Can You Donate Plasma if You Smoke Weed? What About Blood? Vapes FRANK Can You Donate Plasma if You Smoke Weed? What About Blood? Can You Donate Plasma If You Smoke Weed? My Marijuana Cards