Medically reviewed by Amelia MacIntyre, DO There are different blood types: A, B, AB, and O, with each also being Rh-positive or Rh-negative.Knowing your blood type is important for safe blood ...

Several genes with varying inheritance patterns are involved in determining your blood type. The most significant gene is the ABO gene which determines your ABO blood type. Like many of your physical ...

Medical emergencies strike without warning. Whether it’s a car accident, severe allergic reaction, or unexpected surgery, having family and friends who know your blood type can significantly impact ...