B Negative (B−)

B Negative blood has B antigens but no Rh factor. It’s one of the rarer blood types, making donors highly valuable.

Key Characteristics

• Has B antigen on red blood cells.
• Lacks the Rh factor (Rh negative).
• Occurs in only about 2% of the global population.

Compatibility

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

Why It Matters

B− donors are rare and critical in emergencies when Rh-negative blood is required.

Health & Donation Tips

• Donate at least twice a year to help maintain emergency supply.
• Register as a rare blood donor if available in your region.
• Stay informed about Rh compatibility for your family.