We are USCAST 

and we help healthcare providers use the safest and most effective antibiotics to treat patient infections.

Our mission

is to help establish crucial standards for testing the bacteria-killing power of antibiotics. The results we interpret and share, allow healthcare providers to use the safest and most effective tools to save patient lives.

Document Releases

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The USCAST organization is pleased to announce the final version release (v4.0) of the USCAST Interpretive Tables.
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The USCAST organization is pleased to announce the “Quinolone In Vitro Susceptibility Test Interpretation Criteria Evaluation" report is now available!
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The USCAST announces the completion of the updated breakpoint comparison tables for 2018!
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 The USCAST organization is pleased to announce that the latest version (v1.2) of the ​Quinolone In Vitro Susceptibility Test Interpretive Criteria Evaluations is now available!
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 The USCAST organization is pleased to announce the final version release (v3.0) of the USCAST Interpretive Tables.
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 The USCAST organization is pleased to announce the final version release (v3.0) of the USCAST Comparison Tables.
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 USCAST Surrogate Testing Guidance document is now available!
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Breakpoint tables for interpretation of MICs and zone diameters (v2.1) are now available!

News & Events

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 View all slide presentations from our 2017 Annual Open Public Meeting. 
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 Registration is open for our 2018 Annual Meeting. 
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USCAST was cited in recent publications

Upcoming releases

In 2018 USCAST is releasing several new breakpoint documents. 
Check back monthly for the latest updates!
Next up for public comment: 
  • Polymyxin Class Breakpoints (Colistin) 
Coming soon:
  • ​Cephalosporin Breakpoints (Ceftaroline, Ceftazidime-Avibactam and Ceftolozane-Tazobactam)​
  • Tetracycline Class Breakpoints (Doxycycline, Minocycline, Tetracycline, Tigecycline)​
USCAST is a proud associate of EUCAST