Certified Perioperative Nurse
The Certified Perioperative Nurse (CNOR) credential is the only accredited certification for perioperative registered nurses. Earning the CNOR is a mark of distinction and demonstrates a commitment to upholding the highest standards in patient safety.
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
Study and Preparation
Study prep time
We recommend a minimum of three months for exam study and preparation.
Primary Exam References
These texts are the primary references for the CNOR exam. Download our CNOR Study Plan for reference material by subject area.
Guidelines for Perioperative Practice
AORN. Denver, CO: Current Edition
Berry and Kohn’s Operating Room Technique
Phillips, N. (Ed.). (13th ed.). St. Louis, MO: Elsevier.
Alexander’s Care of the Patient in Surgery
By, Rothrock, JC. (Ed.). (16th ed.). St. Louis, MO: Elsevier.