Breastfeeding Interruption After a Radiopharmaceutical (NRC Regulatory Guide 8.39)
Breastfeeding interruption after a radiopharmaceutical, from NRC Regulatory Guide 8.39.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Radiopharmaceutical
- Tc-99m MAA
- Administered activity
- 4
- Activity unit
- mCi
Result: Tc-99m MAA, 4 mCi: instructions are required; no record is required. Recommended interruption: 24 hours.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Radiopharmaceutical
- Administered activity (not needed for the rows with a duration only)
- Activity unit
How this is calculated
Citation
NRC Regulatory Guide 8.39, Revision 1 (April 2020), Table 3: activities that require instructions and records for patients who could breastfeed, and the recommended duration of interruption. 10 CFR 35.75(b). Read the sources: Regulatory Guide 8.39 Rev. 1 ↗, 10 CFR 35.75 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.