The derivation of specific blood components such as red blood cells, platelets, and plasma from whole blood donations is a foundational and uncontroversial fact of routine blood banking, requiring no citation.
The claim states that specific volumes of blood products can be derived from whole blood donations, which is a well-established and basic operational fact of hematology and transfusion medicine. By Step 0 guidelines, statements that are trivially true by direct everyday observation or standard medical definition are classified as COMMON_KNOWLEDGE, and no citation is needed. None of the retrieved papers directly test or challenge this fundamental premise; rather, they examine peripheral processing variables, novel cell therapies, or unrelated biomedical applications.