---
kind: "unit"
title: "21"
title_heading: "Food and Drugs"
key: "chI/subchD/part315"
level: "part"
label: "Part 315"
heading: "Diagnostic Radiopharmaceuticals"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/21/chI-subchD-part315"
sections_count: 6
---

# Part 315 — Diagnostic Radiopharmaceuticals

Title 21 C.F.R. — Food and Drugs › Chapter I — Food and Drug Administration, Department of Health and Human Services › Subchapter D — Drugs for Human Use

## Sections

- [§315.1. Scope.](/cfr/21/315.1.md)
- [§315.2. Definition.](/cfr/21/315.2.md)
- [§315.3. General factors relevant to safety and effectiveness.](/cfr/21/315.3.md)
- [§315.4. Indications.](/cfr/21/315.4.md)
- [§315.5. Evaluation of effectiveness.](/cfr/21/315.5.md)
- [§315.6. Evaluation of safety.](/cfr/21/315.6.md)