---
kind: "section"
citation: "21 C.F.R. § 111.320"
title: "21"
number: "111.320"
heading: "What requirements apply to laboratory methods for testing and examination?"
url: "https://uscodex.org/cfr/21/111.320"
---

# §111.320. What requirements apply to laboratory methods for testing and examination?

- (a) You must verify that the laboratory examination and testing methodologies are appropriate for their intended use.
- (b) You must identify and use an appropriate scientifically valid method for each established specification for which testing or examination is required to determine whether the specification is met.

## Notes

### Authority

Authority: 21 U.S.C. 321, 342, 343, 371, 374, 381, 393; 42 U.S.C. 264.

### Source

Source: 72 FR 34942, June 25, 2007, unless otherwise noted.