The Rh factor is an inherited type of protein found on the red blood cells. Most people who have the Rh factor – they are Rh positive. Others who do not have the Rh factor – they are Rh negative. Instead of saying, “I’m A Rh negative,” we simply say, “I’m A negative.”

This is very important information if you are pregnant, have a miscarriage, an ectopic pregnancy, or even an elective abortion.

The Rh factor may cause complications if an Rh-negative woman’s blood comes in contact with the Rh-positive blood of a fetus. The woman’s body may make antibodies that attack Rh-positive blood, causing complications for the current or future pregnancies. This fairly common occurrence is treated with an injection given by a doctor, so be sure to ask about your blood type no matter what the next steps of your pregnancy look like.

A simple blood test can identify a woman’s blood type and Rh factor. However, an antibody screen can show if an Rh-negative woman has developed antibodies that attack Rh-positive blood.

Contact your healthcare provider for more information on the RH Factor.


The information presented on this website is intended for general education purposes only and should not be relied upon as a substitute for professional counseling, medical, or prenatal care.

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