what blood type is rare

The rarest blood type in the world is called Rhnull , often nicknamed “golden blood,” and it has been identified in fewer than about 50 people globally. Among the usual “eight” common types, AB negative (AB−) is the rarest, found in well under 1% of most populations.

Quick Scoop

• Absolute rarest: Rhnull (“golden blood”) has no Rh antigens at all and occurs in roughly 1 in several million people, with only a few dozen documented cases worldwide.

• Rarest of the main 8: AB− is the least common of the standard ABO + Rh types, making up under about 1 in 100 people in many regions.

• Why it matters: People with very rare blood types can have trouble finding compatible donors, so blood donation registries track these types carefully and may coordinate internationally for transfusions.

A tiny “golden” club

Rhnull is sometimes described as “more precious than gold” because it can be used to help patients with many different rare Rh-type combinations, yet those who have it can only safely receive blood from other Rhnull donors. That makes every unit from these donors critically important in emergencies and complex medical treatments.

Information gathered from public forums or data available on the internet and portrayed here.