Vidiot: I agree with you.
Desirous of change: All the "fractions" of erythrozytes, leukozytes, thrombozytes and plasma (red and white blood cells, platelets and plasma) are permitted or as they say a conscience matter.
The unlogical things: All of it is derived from blood donations (hundreds or thousands just for one treatment of 'clotting factors'). Some fractions are much bigger than the forbidden components. In mother milk are more white blood cells than in the same amount of blood. That means a baby is allowed to drink white blood cells but is forbidden to have them infused in a medical urgency.