» Rh
o (D) Immune Globulin conforms to the regulations of the FDA concerning biologics (see
Biologics
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). 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.