Are You Still There?
Due to inactivity, you will be signed out in two minutes unless you click 'Continue'.

To order isolate panels, please Sign In or Register to Create an Account
Please visit Questions & Answers for frequently asked questions and additional isolate/ordering information.

The CDC & FDA Antibiotic Resistance (AR) Isolate Bank provides curated collections of resistant organisms to help microbiologists, drug and diagnostic manufacturers, and researchers combat one of the world’s greatest infectious disease threats.

Isolates are gathered through CDC’s outbreak response and surveillance programs, validated and sequenced for testing, and then thoughtfully curated to increase lab efficiencies and public health innovations. The isolates represent samples from healthcare-associated, foodborne, gonorrhea, and community-associated infections.

Device manufacturers and users of FDA cleared devices shall consult the FDA’s Antibacterial Susceptibility Test Interpretive Criteria       website for breakpoints recognized or recommended by FDA, and for information regarding FDA exceptions or additions to the applicable, recognized consensus standard.

Please use the following citation for any publications, protocols, or any written materials using AR Bank Isolates.

CDC & FDA Antibiotic Resistance Isolate Bank. Atlanta (GA): CDC. [cited date]

In text citation for single isolates:
  • e.g., Escherichia coli AR Bank # 0001.
For panels:
  • e.g., ceftazidime/avibactam panel (CDC & FDA AR Isolate Bank).

Have you published your work using AR Isolate Bank isolates?
We would like to hear about your work involving AR Isolate Bank isolates. Please email us at to share the title, publication information, and link or DOI. We will list peer reviewed publications that include AR Isolate Bank isolates on the AR Isolate Bank website’s AR Isolate Bank Citations page.

AR Isolate Bank
By the Numbers

33 panels
1032 isolates
5374 orders
3420 registered users

File Download icon

NEW: Use the 2023 Breakpoint Implementation Toolkit       to assist in updating the minimal inhibitory concentration (MIC) breakpoints used in your laboratory.

Shigella image

Latest panels:

Breakpoint updates:

Piperacillin/tazobactam Verification:
The following panels contain Enterobacterales isolates with different susceptibility to piperacillin/tazobactam. Fluoroquinolone Verification:

Suggested citation: CDC and FDA Antibiotic Resistance Bank. Atlanta (GA): CDC. [cited date]

Contact us at, or call 404-639-2180.