Compatibility Checker

A+
A-
B+
B-
AB+
AB-
O+
O-
A+
A-
B+
B-
AB+
AB-
O+
O-

Select blood types to check compatibility

Choose both donor and recipient blood types above to see if they are compatible for transfusion.

Complete Compatibility Matrix

Donor →
Recipient ↓		 A+ A- B+ B- AB+ AB- O+ O-

Important Facts

  • O- is the universal donor
  • AB+ is the universal recipient
  • Only 7% of people have O- blood type
  • Blood type is determined by genes
  • Rh factor must also be compatible

Donation Guidelines

  • Donate every 56 days (whole blood)
  • Plasma donation every 28 days
  • Platelet donation every 7 days
  • Must be 17+ years old (16 with consent)
  • Weight at least 110 lbs (50 kg)

Safety Precautions

  • All blood is tested for infections
  • Cross-matching prevents reactions
  • Emergency release may bypass some tests
  • Blood is stored at precise temperatures
  • Shelf life varies by component