The rarest blood type in the world is Rh-null, also known as "golden blood". Fewer than 50 people worldwide have been identified with this blood type. Rh-null blood lacks all 61 possible Rh antigens on red blood cells, making it incredibly rare and valuable for transfusions.
While AB-negative is often considered the rarest of the eight main blood types, it's far more common than Rh-null, with only 1% of the population having this blood type.
In the United States, AB-negative is also the rarest blood type among donors, with only 1% of the population having it.
Here's a breakdown of some of the rarest blood types:
- Rh-null: Fewer than 50 people worldwide have this blood type.
- AB-negative: Approximately 1% of the population has this blood type.
