» Rh_o (D) Immune Globulin conforms to the regulations of the FDA concerning biologics (see Biologics 〈1041〉). It is a sterile, nonpyrogenic solution of globulins derived from human blood plasma containing antibody to the erythrocyte factor Rh_o (D). It contains not less than 10 g and not more than 18 g of protein per 100 mL, not less than 90.0 percent of which is gamma globulin. It has a potency, determined by a suitable method, not less than that of the U.S. Reference Rh_o (D) Immune Globulin. It contains 0.3 M glycine as a stabilizing agent and contains a suitable preservative.