» Chromium Cr 51 Edetate Injection is a sterile solution containing radioactive chromium (⁵¹Cr) in the form of a complex of chromium (III) with edetic acid, present in excess. It is made isotonic by the addition of Sodium Chloride. It contains not less than 90.0 percent and not more than 110.0 percent of the labeled amount of ⁵¹Cr as edetate complex expressed in megabecquerels (or microcuries or millicuries) per mL at the time indicated in the labeling. Other chemical forms of radioactivity do not exceed 5.0 percent of the total radioactivity. It may contain a suitable preservative. It contains not more than 1 mg of chromium (Cr) per mL.