As you probably know, we all have a blood type. But do you know what makes each type unique?
While several blood group systems are used to type your blood, ABO is the most important. Your ABO type is based on the presence or absence of two antigens (A and B) on the surface of red blood cells. There are four ABO types: A, B, AB and O.
Your blood type is also determined by Rh status: Rh+ or Rh-. That leaves us with eight possible blood types:
Each of these eight types is unique. Blood types determine who you can give blood to and receive blood from. Which type of donation is best for you is determined by your blood type, as well as patient need. Read more to find out what makes your blood type special:
How Rare Is My Type?*
“The rarest blood type is the type that’s not available when YOU need it!”
|Blood Type||How Many Have It||Frequency|
|O +||1 person in 3||37.4%|
|O –||1 person in 15||6.6%|
|A +||1 person in 3||35.7%|
|A –||1 person in 16||6.3%|
|B +||1 person in 12||8.5%|
|B –||1 person in 67||1.5%|
|AB +||1 person in 29||3.4%|
|AB –||1 person in 167||.6%|
*These are general estimations for educational purposes only. Actual data may vary. Original source: AABB Technical Manual 18th Edition