How many grams of hemoglobin are in 1 unit of rbc?

One unit of red blood cells (RBCs) typically contains about 200 to 250 milliliters of blood. Hemoglobin concentration in whole blood is usually around 12 to 15 grams per deciliter. Therefore, one unit of RBCs contains approximately 15 to 20 grams of hemoglobin, depending on the donor and the specific characteristics of the blood.