I've often wondered about this, mind you, I would have been there for days, my veins were never good to even get enough for the inr tests.

Nope, you can"t . Part of questions they are you are about blood thinners, and blood disorders. You cannot be on blood thinners. Sorry folks, I have returned to donating blood after my PE. The last time I got bounced out for my hemoglobin being to low. :(

I've been told no more blood doning at all, even if I come off the warfarin.
It will make no difference whether or not they find any genetic clotting disorders or not, it's a straight no!

csteeps---- I'm not saying you misunderstood what you were told----- but could you tell us 'who' told you that?

The sites I see only mention ON warfarin.

" I am on warfarin (Coumadin). Can I donate blood? No. A person on a blood thinner (anticoagulant), like warfarin, will not be accepted as a blood donor"

Blood Clotting Disorder

Can people with factor V Leiden or another blood clotting disorder (thrombophilia) donate blood?

Yes, individuals with factor V Leiden or any other thrombophilia can donate blood, platelets, or blood plasma. There are no problems. If a person with factor V Leiden or another thrombophilia is on warfarin, he/she will not be accepted as a blood donor as discussed above."

http://patientblog.clotconnect.org/2011/10/12/blood-or-organ-donation-being-on-blood-thinners-or-having-a-thrombophilia/

I don't know if clotconnect is correct, but I'll assume they are.

i wonder if there's a different donor eligibility depending on what country you're in?

That could definitely be, rmb. When csteeps checks in again perhaps she'll clear things up.

If it is different between Great Britain and the USA---- I wonder why? (Always with the wondering! grin)

http://www.blood.co.uk/can-i-give-blood/who-cant-give-blood/

I'm not going to copy or comment on any reasons given in the UK for o.k., may not or never donate blood.

Except for this one under NEVER donate blood:

"You've ever injected yourself with drugs - even once.

I abhor fuzzy language! What do they mean 'drugs'? I injected myself with bicillin for 3-4 years (during which time I had the most lovely remission from Lyme).

Does that mean I couldn't give blood in the UK?

Yeah, yeah, they probably mean 'street/recreational drugs'----- but good grief! How hard would it be to make that clear? Argggh! Consequently that entire web site may be 'fuzzy'. Geesh!

This was from the actual blood doning service.
I rang to ask them specifically as I would have donated when I came off the warfarin if I'd been allowed to.
It was because of my clotting history, not specific to being on/off the warfarin.
You're probably right about things being different in the UK though, there do seem to be a few things which vary between here and the US.
Carol x

@csteeps--- you said:
***It was because of my clotting history,***

O.K.---- I won't ask for any more personal history but I don't understand what that means.

Sorry you can't donate, because you really seem to want to.

My clotting history is just the multiple bi-lateral PEs back in January.

csteeps---- thanks, but then I 'still don't understand' why 'they' said you couldn't. Probably a mystery I'll never know the solution to.