Hey, SarahJane, not sure if you've read the entire thread or not, so if I'm saying something you've already read, well, ignore me.
Anyway, the reason we aren't supposed to donate is actually because nobody knows what causes AS, and until they do, they're afraid we'll pass it on in the blood somehow. The meds are secondary to that, based on what I was told.
Hugs,
Kat
