Two ways: First, ask the record room of the hospital where you were born if they have a record. it is often done at birth from the cord blood. Second, ask your physician who may have it in her record. Finally, you can request a repeat test from your physician. Remember, if there is an emergency and there is a need to know, blood typing and cross matching is done for safety sake by the hospital and not relied upon patient history.
Wayne Yankus, MD, FAAP
expert panelist: pediatrics