O Positive (O+)
O positive (O+) is the most common blood type in the US. Its red cells can be given to all Rh positive types (A+, B+, AB+ and O+), which covers most patients.
How common in the US: 37%
Can donate to
A+B+AB+O+
Can receive from
O+O-
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Key traits
- Can donate red cells to all Rh positive types
- No A or B antigens
- Has the Rh (D) antigen
- Can receive from O+ and O-
Donating this type
- In high demand because it can help so many patients
- Widely used in routine transfusions
- O+ donors are essential to keep the general supply steady
This information is general and does not replace advice from a health professional. Your eligibility is always decided at the donor screening on the day of donation. Rules change, so confirm with the American Red Cross or the blood center where you plan to donate.