🅾️ O button (blood type) emoji

The O button represents blood type O in the ABO blood group system, the most common blood type worldwide. People with type O blood have no A or B antigens on their red blood cells but have both anti-A and anti-B antibodies in their plasma. This makes them universal blood donors for red blood cells.

Blood type O individuals can donate red blood cells to people of any blood type (O, A, B, or AB), earning them the designation of universal donors. However, they can only receive blood from other type O donors. Type O blood is crucial in emergency situations when there is no time for blood typing.

This emoji is used when discussing blood types, medical information, blood donation, or emergency medical situations. It can represent the universal donor status, blood drives, or medical identification and compatibility discussions.

Could also be called Type O blood, universal donor, blood group O, O positive or O negative emoji.

Other meanings

Universal donor, blood type classification, emergency blood supply, medical compatibility

Example Usage

Universal donor type 🅾️

Related emoji

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Visual description

The letter O displayed on a red square button, indicating blood type O

⚠️ Emoji appearance varies by platform.