In most cases, WBCs are considered "contaminants" in donated products. We blood bankers consider them the source of many evil things and jump through alot of hoops trying to get rid of them before transfusion.
There are two WBC products of noted worth. One is Granulocytes, which is collected by apheresis and infused into a patient with sepsis, etc. It's use is controversial, and it costs about the same as other apheresis products.
A second product is Source Leukocytes, which is the buffy coat from a unit. These are extracted at the blood center during component processing and sold to firms, who use them to make interfereon, etc. Europeans used to be big into Source Leukocytes, and you don't get alot of money for them.
alex948 reacted to Lcsmrz in White blood cellsIn most cases, WBCs are considered "contaminants" in donated products. We blood bankers consider them the source of many evil things and jump through alot of hoops trying to get rid of them before transfusion.