AB Negative (AB−)

AB Negative blood has both A and B antigens but lacks the Rh factor. It’s among the rarest blood types, making every donor invaluable.

Key Characteristics

• Has A and B antigens on red blood cells.
• Lacks Rh factor (Rh negative).
• Represents less than 1% of the global population.

Compatibility

Can receive from A−, B−, AB−, and O− donors. Can donate to AB− and AB+ recipients.

Why It Matters

AB− blood is rare and often used for emergency transfusions for rare-type patients or newborns.

Health & Donation Tips

• Donate whenever possible — even small quantities help.
• Stay registered as a rare blood donor.
• Keep your blood donor card up to date for emergencies.