CFR > Title 21 - Food and Drugs > CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER F—BIOLOGICS (parts 600 to 680) > PART 640—ADDITIONAL STANDARDS FOR HUMAN BLOOD AND BLOOD PRODUCTS > SUBPART I—Plasma Protein Fraction (Human) (§640.90 to §640.94)