a question about blood types?

Question

Would a hospital usually tell you the full genotype of your blood type (ie AO or AA instead of just A)? And when would they most give you this info? (ie when you're born, when you go in for a check-up, etc).

Just to add....Yes, I know they have the techniques and COULD give you the genotype, but I want to know if it is common for them to actually disclose your genotype without you having to ask. thanks!

Answer 1

in the most frequently used blood typing tests, a patient with with type A or type B blood would not know if they are heterozygous. only type O or type AB would know their actual genotype. most people never have their blood type done for medical purposes with a few exceptions, such as: prenatal patients, blood donation, or in a pre-surgical work-up where excessive blood loss is anticipated. it is NOT done on newborns unless there is a problem, such as icterus (elevated bilirubin). it is NOT included in regular check-ups. to do this would add extra expense and increase your medical bill, as well as being an unnecessary test. as far as the importance of knowing your blood type, sure, if you have had it done, go ahead and ask, but in situations where you need a transfusion, the blood typing and antibody screening tests are always repeated with each transfusion order. this would rule out errors at other institutions as well as finding newly developed antibodies which may cause a transfusion reaction.

Answer 2

Hospital labs will tell your blood type only (phenotype), not your genotype.

You are tested for blood type only if that information is needed, such as preparation for possible transfusion.

The Red Cross will tell you your blood type if you donate blood - that's a great way to find out for free (and they'll give you cookies, too)

If you have enough family members who know their blood types, you might be able to work your genotype out.

Answer 3

no this is not a common practice and i've never come across anyone wanting to know