2024 USCAST Interpretive Tables

The 2025 edition of the USCAST STIC in a searchable PDF format can be downloaded.

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Aminoglycoside STIC Evaluations

Version 1.3, 2019

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2021 USCAST STIC Tables

The 2021 edition of USCAST STIC Tables contains breakpoints for hundreds of antimicrobials in a searchable PDF format that can be downloaded.

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2020 USCAST STIC Tables

This document shows the currently published susceptible breakpoints for three breakpoint determining organizations (USA-FDA, CLSI and EUCAST-SC) compared to those breakpoint criteria recommended by USCAST. Only four antimicrobial agent classes are presented (fluoroquinolones, aminoglycosides, oxazolidinones, peptides), those drug groups that have been most recently addressed by the USCAST process via official reports or where breakpoints were suggested at the time of regulatory approval in the USA or Europe. USCAST advocates an active harmonization process among these organizations to minimize discords between antimicrobial susceptibility test results produced in the USA and the rest of the world.

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