The idea of having blood removed from My body through A Needle also is something that I Really Dislike having to do. Sorry for making another Post But I could Not figure out how to Edit My previous one to Add this little part in.
You can use the MODIFY link at the top of your post to edit if you want (except in the moderated section - which this isn't).
... and just man up and give some blood, you might actually find its very simple and a really good feeling afterwards - like you just kicked some ass and did something cool.
Don't worry about having traces of THC in your system, they don't care - its about saving lives not politics, although I wouldn't reccommend donating when you're fully baked lol.
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BTW having an IV line put in is like 1% of getting an injection. Getting an injection they stick a needle into you muscle tissue then pump stuff in under pressure, which is not fun. An IV line just goes through your skin and into a blood vessel then the blood just decants by way of your normal blood pressure.
It's really no big deal.