Fadeaway ...
I understand. You are correct.
I was just speaking from a practical standpoint. If you tell the elders you are donating whole blood for the purpose of transfusing it to someone it would typically be far different than if you explained you specified the blood to be fractioned into "allowable" fractions.
Just my thoughts but it would depend on the BOE and how you are viewed in the congregation.
Rub a Dub