A member asked:

Do all negative blood types automatically have a negative rh factor? (if you neg on one are u neg on other)

A doctor has provided 1 answer

It's the same thing: In the abo/rh blood typing categories, if the rh factor is not there, it is called a negative blood type. (in other situations, when doctors are not talking about the abo/rh typing, then "negative" would mean that something else is missing. For example, a test for sickle cell anemia would be called "negative" if no sickle cell mutation was found, but would not be talking about the rh factor.).

Answered 2/6/2019

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