Is Urea ((sup 14)C) Safe in Breastfeeding

I am a breastfeeding mother and i want to know if it is safe to use Urea ((sup 14)C)? Is Urea ((sup 14)C) safe for nursing mother and child? Does Urea ((sup 14)C) extracts into breast milk? Does Urea ((sup 14)C) has any long term or short term side effects on infants? Can Urea ((sup 14)C) influence milk supply or can Urea ((sup 14)C) decrease milk supply in lactating mothers?

Information in this record refers to the use of urea C14 as a diagnostic agent. No information is available on the use of urea C14 during breastfeeding. However, administration of urea C14 directly to pediatric patients is considered to be safe.[1] The International Commission on Radiological Protection recommends that breastfeeding need not be interrupted after administration of urea C14.[2]