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# Guide on Device Antimicrobial Testing
- URL: https://www.fdaweb.com/guide-on-device-antimicrobial-testing/
- Published: 2023-09-29T12:00:00.000Z
- Updated: 2026-09-14T18:59:25.000Z
- Author: David McFarland
- Tags: FDA Policy/General, #legacy-id-D5155452

*Federal Register* notice: FDA is making available a final guidance entitled “Antimicrobial Susceptibility Test (AST) System Devices — Updating Breakpoints in Device Labeling.” The document provides information about updating susceptibility test interpretative criteria/breakpoints and associated performance data in labeling for such devices in response to breakpoint changes posted on the FDA-Recognized Antimicrobial Susceptibility Test Interpretative Criteria Web site. To view the notice, click [here](https://www.govinfo.gov/content/pkg/FR-2023-09-29/pdf/2023-21407.pdf?ref=fdaweb.com).