jawbrodt wrote:
Can you donate blood if you have weed in your system?
![chin :chin:](./images/smilies/chin.gif)
Yes.
And they do test the samples before using them. I doubt they test for weed, but they do test for HIV, siphyllis (sp?), mad cow disease (seriously), and other blood-borne pathogens.
Every time I've donated blood, they've had a step where you can privately tell them not to use your blood. So you can donate blood even if you know you could infect someone - and tell them not to use your blood, or else they'll probably figure it out on their own.
BTW, HIV tests in particular keep getting more accurate. I imagine the Red Cross is careful enough to use the latest, fastest screening test and then re-test to weed out all the false positives. And I think they'll even call you and let you know if you test positive for anything.