Human Blood Types

Blood is grouped into four types: A, B, AB, and O. Each type is also classified by an RH factor – either positive ( + ) or negative
( - ). When a blood transfusion is necessary, donor and patient blood must be compatible. If not, the patient’s body will react to the incompatible donor cells, leading to complications, maybe even death.

Your ABO blood grouping and Rh factor are inherited from your parents. Check the chart below to see what percentage of the population shares your ABO grouping.

O+	37%	O-	6%
A+	34%	A-	6%
B+	10%	B-	2%
AB+	4%	AB-	1%

After you've donated, you can log in to your Donor Hero History to learn your blood type. Whatever type you are, someone in the community can benefit from your blood donation. Donate today. You’ll feel terrific!

Possible Blood Transfusion Combinations

Type:	Can be *given* to patients with type:
O+ A+ B+ AB+ O- A- B- AB-	O+, A+, B+, AB+ A+, AB+ B+, AB+ AB+ O+, A+, B+, AB+, O-, A-, B-, AB- A+, AB+, A-, AB- B+, AB+, B-, AB- AB+, AB-
Patients with Type:	Can *receive* type:
O+ A+ B+ AB+ O- A- B- AB-	O+, O- O+, A+, O-, A- O+, B+, O-, B- O+, A+, B+, AB+, O-, A-, B-, AB- O- O-, A- O-, B- O-, A-, B-, AB-


	HOME \| DONATE BLOOD \| HOSPITAL SERVICES \| EMPLOYMENT \| PRIVACY POLICY \| CONTACT US