You are right that if both your parents are blood group O then you must also be blood group O. However, some people who are (rhesus D) positive are able to pass on a gene for being (rhesus D) negative in which case they can have (rhesus D) negative children with a (rhesus D) negative partner.Both my parents were blood donors, so both knew their blood type. Mum is O+ and Dad is O- so, by the laws of genetics, I must be O+
- never been told it officially, though.
I wouldn't worry about getting your blood group done. If you ever need a transfusion, the blood bank will not just test your blood group, they will also need to cross-match your blood against the intended donor blood. There are all sorts of funny antibody reactions that can go on so even if the donor blood is the same group as you, it may be likely to cause a transfusion reaction so would be unsuitable.That's so true about mothers. Yvonne's is A Resus Negative, do quite rare and needed to know that when we had the children because of anti bodies I believe
Might think about getting a private test and putting it on my iphone's home screen with my T2 stuff
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I wouldn't worry about getting your blood group done. If you ever need a transfusion, the blood bank will not just test your blood group, they will also need to cross-match your blood against the intended donor blood. There are all sorts of funny antibody reactions that can go on so even if the donor blood is the same group as you, it may be likely to cause a transfusion reaction so would be unsuitable.
You are right that if both your parents are blood group O then you must also be blood group O. However, some people who are (rhesus D) positive are able to pass on a gene for being (rhesus D) negative in which case they can have (rhesus D) negative children with a (rhesus D) negative partner.
The reason for this is that we have 2 genes for each blood group, one inherited from our mothers and one inherited from our fathers. The O gene is recessive so if someone is blood group O they must have a OO genotype and can only pass on O genes. The rhesus D negative gene is also recessive so if someone is rhesus negative, they must have a D-D- (also written as dd ) genotype and can only pass on D- (or d) genes. In contrast, rhesus D positive genes are dominant so someone who is rhesus D positive could either have a D+D+ (DD) genotype or a D+D- (or Dd) genotype. If someone has the latter genotyp they have a 50:50 chance of passing on the rhesus D negative gene even though their blood group is rhesus D positive.
Sorry for the long-winded explanation but basically you could be O- even with an O+ parent, depending on whether that parent has one or two genes for being positive.
Sorry, I didn't see that you'd already forked out. Still, I'm sure it will be interesting.Ahhhh ok interesting.
I've ordered the test now, so might as well do it, but I appreciate your reply.
Thanks
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This thread has got me curious about what possibilities there are for donating blood or bone marrow in the UK.
Those who register as donors will get their blood type determined. I joined the marrow donor program in the U.S. and they usually charge you a fee to join, but I got exempted for being of mixed race.
Now I read that there's a British Bone Marrow Registry. (Only young persons are accepted at this time.) On the other hand, a newspaper reported last year that Britain quit using plasma from Britons in 2002, due to CJD. Does that mean that donation of whole blood or plasma in Britain is a thing of the past? Then why does NHS accept British bone marrow?
This thread has got me curious about what possibilities there are for donating blood or bone marrow in the UK.
It's complicated! Most transfusions are of blood components rather than whole blood. Men are used as plasma donors as women can get sensitised during pregnancy and produce antibodies which may cause problems in the recipient. People born after 1 Jan 1996 are given imported plasma from countries with low rate of CJD.Just found this link so maybe whole blood plasma can be donated. It's tested first to make sure it is safe...am I right?
https://www.blood.co.uk/why-give-blood/how-blood-is-used/blood-components/plasma/
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