Is Natrium radio-chromicum (51Cr) Safe in Breastfeeding

I am a breastfeeding mother and i want to know if it is safe to use Natrium radio-chromicum (51Cr)? Is Natrium radio-chromicum (51Cr) safe for nursing mother and child? Does Natrium radio-chromicum (51Cr) extracts into breast milk? Does Natrium radio-chromicum (51Cr) has any long term or short term side effects on infants? Can Natrium radio-chromicum (51Cr) influence milk supply or can Natrium radio-chromicum (51Cr) decrease milk supply in lactating mothers?

Information in this record refers to the use of Natrium radio-chromicum (51Cr) as a diagnostic agent. No information is available on the use of Natrium radio-chromicum (51Cr) during breastfeeding. The manufacturer recommends withholding breastfeeding after a diagnostic dose of Natrium radio-chromicum (51Cr), but does not provide a specific duration. The long biological and physical half-lives of chromium may preclude resumption of breastfeeding of the infant. Mothers concerned about the level of radioactivity in their milk could ask to have it tested at a nuclear medicine facility at their hospital and when the radioactivity is at background levels they may safely resume breastfeeding. A method for measuring milk radioactivity and determining the time when a mother can safely resume breastfeeding has been published.[1]