Blood Compatibility Guide

Understanding blood group compatibility is crucial for safe transfusions. Learn who can donate to whom.

Blood Group Compatibility Chart

Blood Group Can Donate To Can Receive From Frequency
O- All blood groups O- 6.6%
O+ O+, A+, B+, AB+ O-, O+ 37.4%
A- A-, A+, AB-, AB+ O-, A- 6.3%
A+ A+, AB+ O-, O+, A-, A+ 35.7%
B- B-, B+, AB-, AB+ O-, B- 1.5%
B+ B+, AB+ O-, O+, B-, B+ 8.5%
AB- AB-, AB+ O-, A-, B-, AB- 0.6%
AB+ AB+ All blood groups 3.4%

Special Blood Types

Understanding universal donors and recipients

O-

Universal Donor

O- blood can be given to patients with any blood type in emergency situations.

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

Universal Recipient

AB+ patients can receive blood from any blood type donor.

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

Important Guidelines

Critical information for safe blood donation and transfusion

🩸 Blood Donation Rules

  • Must be 17-65 years old (up to 75 with approval)
  • Minimum weight of 110 pounds (50kg)
  • Wait 56 days between whole blood donations
  • Must pass health screening and questionnaire
  • Avoid alcohol 24 hours before donation

⚡ Emergency Situations

  • O- blood used in emergencies when type unknown
  • Type and crossmatch done for non-emergency cases
  • Rh factor important for future pregnancies
  • Emergency blood must be available 24/7

🔬 Testing & Safety

  • All donated blood tested for infectious diseases
  • Blood type verification done multiple times
  • Strict sterile procedures followed
  • Donor health history carefully reviewed
  • Temperature-controlled storage maintained

⚠️ Risk Factors

  • Wrong blood type can cause severe reactions
  • Always verify patient identity before transfusion
  • Monitor patients during and after transfusion
  • Report any adverse reactions immediately
  • Keep detailed records of all procedures