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Antigens or RH factor
Genetic testing can determine this (which is more involved than just a simple blood test).
Doctors can determine positive or negative blood types by administering a test. The difference between positive and negative types is the presence of the RH factor. Positive blood types indicate the presence of the RH factor while negative blood types do not have this factor.
Antigens, which are caused by the RH factor, that determine if you have negative or positive type blood.
A simple blood test can determine whether or not you have hepatitis B.
Antiserum A, Antiserum B, and Anti-Rh factor.
A blood test will most likely be down to see if the individual has the Rh factor (D antigen) present in their blood.
there is always an error factor but with a blood test you can be pretty sure its correct.
You are not alone in not knowing what blood type you are. However, to the best of my knowledge, there is no way to determine what one's blood type is by visual examination alone. A simple blood test would be the best option when trying to determine your individual blood type.
You can determine your blood type easily by having a simple blood test done. You can have this test done at your local physician's office. Your blood will also be typed when you donate blood.
it depends on what blood type that your parent has
Rh is a blood group system used for blood transfusions. Many people have the Rh factor on the red blood cell's surface that determine who they can give and receive blood from.