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Mar 17, 2024 · Type O negative blood is called a universal donor, meaning that it can be safely given to people with most other blood types and has a low risk of a transfusion reaction. People with type AB positive blood are known as universal recipients, meaning they can be given almost any type of blood safely.
The ABO system has four major blood types: A, B, AB, and O. Blood types are further categorized by the presence (positive or +) or absence (negative or -) of the Rh (D) antigen on the surface of...
Types O negative and O positive are in high demand. Only 7% of the population are O negative. However, the need for O negative blood is the highest because it is used most often during emergencies. The need for O+ is high because it is the most frequently occurring blood type (37% of the population).
Jul 14, 2023 · If you have the Rh antigen (Rh D), it's identified in the blood type by the (+) symbol, so Rh+ means you are Rh positive. If you lack it, you are Rh negative or Rh-. Most people are Rh+.
Dec 19, 2022 · People with blood group O-positive can donate blood to not only other O-positive people but also all other positive blood types (including A+, B+, and AB+). More than 80 percent of people have a positive blood type, making O-positive blood in high demand.
What determines if your blood is positive or negative is the Rhesus (Rh) factor, which is an inherited protein in red blood cells. If your blood cells have the Rh protein, then you have a positive blood type. If there is no Rh protein in your blood cells, you have a negative blood type.
When identifying a patient’s blood type, the Rh group is designated by adding the word positive or negative to the ABO type. For example, A positive (A +) means ABO group A blood with the Rh antigen present, and AB negative (AB −) means ABO group AB blood without the Rh antigen.
