Nope. I've been to the ER with a head wound that would not stop bleeding, and was never asked for my blood type.
Had they asked, I would have given the wrong answer. My blood was typed when I was born. 25 years later when I started donating blood, I was typed again -- and told a different type.
My physicians and phlebotomists assure me blood type cannot change, and old blood tests were simply not very accurate. I don't know any lab or clinic that trusts what someone else claims about blood type.
