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# Microdose Radiopharm Drug Guidance
- URL: https://www.fdaweb.com/microdose-radiopharm-drug-guidance/
- Published: 2018-08-21T12:00:00.000Z
- Updated: 2026-09-15T00:27:16.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5142160

*Federal Register* notice: FDA has made available a final guidance entitled “Microdose Radiopharmaceutical Diagnostic Drugs: Nonclinical Study Recommendations.” The document is intended to assist sponsors of such drugs on the nonclinical studies recommended to support human clinical trials and marketing applications. To view the notice, click [here](https://www.gpo.gov/fdsys/pkg/FR-2018-08-21/pdf/2018-17961.pdf?ref=fdaweb.com).