how rare is o positive blood
O positive blood is not rare — it’s actually one of the most common blood types. In the UK donor data, about 36% of donors are O positive, and U.S. sources put it at about 37% to 38% of the population.
Quick Scoop
- O positive is the most common blood type in many populations.
- It’s not “uncommon,” but it is still very important because hospitals use it a lot.
- People with O positive blood can usually donate red cells to other Rh-positive blood types, which is one reason it stays in high demand.
What the numbers mean
Here’s a simple breakdown from recent donor data in the UK:
| Blood type | Share of donors |
|---|---|
| O positive | 36% |
| A positive | 28% |
| O negative | 14% |
| A negative | 8% |
| B positive | 8% |
| B negative | 3% |
| AB positive | 2% |
| AB negative | 1% |
Why people ask about it
Even though O positive is common, it’s still highly needed because many patients can receive it, and hospitals use it frequently. In practice, common blood types can still be in short supply when donation levels drop.
Bottom line
If you’re asking whether O positive is rare, the answer is no — it’s one of the most common blood types, not one of the rare ones.
Do you want a simple chart showing which blood types are rarest?