One unit of fresh blood raises Hb% ( Hemoglobin concentration ) by: (A) 0.1gm%, (B) 0.5 gm %, (C) 1gm%, (D) 2 gm%
Answer is C. Single unit of whole blood raises Hb by 1 gm% and Hematocrit by 3% More than 70% of transfused cells will be ble after 24 hours Ref: Harrison's 19th edition Pgno :138