I donated my second unit of blood today for my pending knee surgery. The lady asked me if I knew my blood type and I just said "A, according to my military records. I think A-Positive."
She said, "Well, you have A-Negative. It's the second rarest form and only about 5% of the population have it."
I didn't know that.
She went on to say that they find a lot of blood type errors among active and former military personnel. She said most go through life thinking their blood type is what they were told in the military.
I came home and dug out my DD-214's for for both the Army and the Navy to see what they said. The Army DD-214 only said "Type A blood group." The Navy DD-214 made no mention of my blood type at all.
I would think that knowing your correct blood type would be handy knowledge to have, especially in an emergency, and even more important when you are in an area where there are no labs nearby that could confirm your blood type.
Just passing the information on...
Spring "A-Negative But I'm Trying To Be Positive" Chicken
Spring Texas USA