[vc_row][vc_column][vc_column_text]Human blood types vary across eight common ABO/Rh groups, but a few are exceptionally rare and clinically critical. The rarest blood type is Rh null, often called “golden blood,” followed by subtypes like Bombay (HH) and AB–. This guide explores: What

Understanding the blood donation rules and blood donation requirements is essential for first-time donors and veterans alike. This guide demystifies the eligibility criteria, i.e., age limits, weight, health conditions (e.g., diabetes), and recovery food, to ensure a safe and impactful donation.