Why is blood type important at birth?
July 10, 2008 by Marijke Durning, RN
Filed under Women's Health
You may have heard of the rhesus factor. That is the negative or positive part of your blood type. For example, I have blood type O, but I am negative for the rhesus factor, so I am O negative. My husband is also blood type O, but he is positive for the rhesus factor, so he is O positive.
There are 4 types of blood: A, B, AB, and O. Among those blood types, you can be negative or positive.
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