Shelf life of blood in a blood bank in CPDA buffer:: (A) 21 days, (B) 30 days, (C) 35 days, (D) 42 days
Answer is C. CPDA is Citrate-Phosphate-Dextrose buffer supplemented with adenine. The shelf life of RBC concentrates in CPDA is 35 days. In CPD buffer life span is 28 days.