Can Smoking and Vaping Cause Back Pain? National Spine Health Foundation Weed And Donating Blood: All You Need To Know Moose Labs Can You Donate Blood if You Smoke Weed? Can You Donate Plasma If You Smoke Weed? CGM Monitors Weed And Donating Blood: All You Need To Know Moose Labs We all know smoking and vaping isn't great for your health. But it doesn't stop you from being a blood or plasma donor. Just make sure to wait one hour after donating