That must be just a joke.

Anyway, in most cases when checking the blood, if you're rhesus+ they wouldn't tell you much about it, but if you're rhesus-, the staffs will inform you about your special case, and request for your future donations.

Rhesus- is rare in this region (SEA), but in Europe and Africa it's more common there. Either way, both rhesus would not affect on your health.

I'm a G6PD too, last time wanted to donate blood but the doc blocked me because he says even if I donate the blood, the recipient would be affected with the G6PD as well, so better dont add more trouble to others.

I heard there's also such thing as plasma donation which works for G6PD ppl, but the procedure is much more complicated. That's what I heard from the doc that time.

Hope it helps for those who needs a little info bout donating blood.