About the CNOR

CNOR certification assesses the knowledge and skills of a perioperative nurse with a minimum of two years of clinical practice. More than 40,000 nurses internationally hold the CNOR credential and consider the designation a personal and professional accomplishment.


Check Your CNOR Exam Eligibility

A current, unrestricted RN license in the country where currently practicing.

Currently working full- or part-time in perioperative nursing clinical practice, nursing education, administration, or research.

A minimum of 2 years and 2,400 hours of experience in perioperative nursing, with a minimum of 1,200 hours in the intraoperative setting.


CNOR Exam Overview

Subject Areas
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Study and Preparation

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Study prep time

We recommend a minimum of three months for exam study and preparation.

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Primary Exam References

These texts are the primary references for the CNOR exam. Download our CNOR Study Plan for reference material by subject area.

Text Book

Guidelines for Perioperative Practice

AORN. Denver, CO: Current Edition

Text Book

Berry and Kohn’s Operating Room Technique

Phillips, N. (Ed.). (13th ed.). St. Louis, MO: Elsevier.

Text Book

Alexander’s Care of the Patient in Surgery

Rothrock, JC. (Ed.). (16th ed.). St. Louis, MO: Elsevier.

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CNOR Exam Resources

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CNOR Certification webinars

Learn more about exam subject areas and test-taking strategies.

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CNOR Exam study outline

Develop a personalized study plan with CCI’s free preparation tool.

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CNOR Handbook

The complete guide on the CNOR credential.

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CNOR Practice Questions

Explore the format and structure of CNOR exam questions.

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CNOR Exam Preparation

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CNOR Online Practice Exam

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CNOR On-Demand Prep Course

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CNOR Prep Book