10 C.F.R. § 35.69 Labeling of vials and syringes.
Title 10 - Energy
Each syringe and vial that contains unsealed byproduct material must be labeled to identify the radioactive drug. Each syringe shield and vial shield must also be labeled unless the label on the syringe or vial is visible when shielded.
Title 10: Energy
PART 35—MEDICAL USE OF BYPRODUCT MATERIAL
Subpart C—General Technical Requirements
§ 35.69 Labeling of vials and syringes.