nothing but normal saline can be run with any blood products
The Complete Blood Count test measures the percentage of packed red blood cells in a whole blood sample.
hematocrit
Hematocrit test measures the percentage by volume of packed red blood cells in a whole blood sample. It is used to evaluate the concentration of red blood cells in the blood and can help diagnose conditions such as anemia or dehydration.
Packed red cells are prepared by removing most of the plasma from whole blood through a process called centrifugation. This centrifugation process separates the red blood cells from the plasma and other cellular components, resulting in a concentrated suspension of red blood cells. The packed red cells are then typically suspended in a small amount of saline solution before being transfused to a patient.
Typically when people refer to a blood bag they mean a transfusion of packed red blood cells. A transfusion of one unit of packed red blood cells would be approximately 250 mL.
Packed Red Blood Cells
Packed, spun-down or lysed red blood cells would be better.
Red blood cells are packed with a chemical compound called hemoglobin, which has the ability to both absorb and release oxygen molecules.
lactated ringers
1:4
Whole blood is made up of 3 parts - red blood cells, plasma and a Buffy coat which contains white blood cells and platelets.
Packed red blood cells (PRBCs), also called "packed cells," are a preparation of red blood cells that are transfused to correct low blood levels. A unit of PRBCs begins as a 450 milliliter volume of whole blood. Platelets and plasma are removed to leave a preparation of 220 milliliters of mostly red blood cells. This step concentrates the red blood cells so that they occupy less space, thus the term "packed." One unit of PRBCs typically will raise the hematocrit by 3-4% and the blood hemoglobin concentration by 1 gm/dl. PRBCs last in refrigeration for up to 42 days, but under the right conditions, they can be frozen for up to a decade.