Can having Rh negative blood type affect a home pregnancy test?
If you have a negative Rh factor and your partner’s Rh factor is positive or unknown, you may receive a RhoGam injection to protect your baby and salvage future pregnancies. This is a precaution because if there is a chance your baby has a positive Rh factor and there is a chance your blood types will cross, your body will see the positive Rh factor as an enemy, like a virus, and in defense, your body will attack the “enemy” which could wind up in a miscarriage. Your body will then build antibodies to defend against any future “enemies”, leading to more miscarriages. This does not happen if the Rh factors are reversed. This is the only time Rh factor is a determination in a pregnancy.
