These handbooks provides information needed to apply and prepare for the COHN and COHN-S examinations. Each handbook includes the following:

  •  eligibility requirements
  •  examination policies
  •  test blueprint core
  •  content areas
  •  sample questions
  •  study references
  •  examination application

Please retain this handbook after applying for the examination,  It is extremely useful when studying for the examination,

PLEASE NOTE: There are different education qulaifications for the COHN and COHN-S examinations.  HOWEVER, if you qualify for both examinations, just having a higher degree does not necessarily mean you should take the examination with the higher degree qualifications.  Please review the examinations Blue Prints/Test Specifications in BOTH HANDBOOKS before deciding on which examination to take.  It is HIGHLY RECOMMENDED that you choose the examination that fits your practice, not your level of education.

What are some suggestions to prepare for the certification exam?

Recently certified occupational health nurses identified these tips to prepare for the exam: 

  • Begin a regular study plan about 6 months prior to when you plan to take the exam.
  • Most nurses studied 3-5 days a week and averaged 9 to 10 hours of studying a week
  • Helpful study materials included: AAOHN core curriculum book; AAOHN on line core curriculum, and ABOHN self-assessment tests (CSATs).  Please note:  Although the AAOHN Core Curriculum and On-line classes provide an excellent overview of the aspects of occupational health nursing practice, it is not intended as an exclusive source of information for  the exams.
  • 44% indicated a certification review course was helpful


              COHN Examination Handbook               COHN-S Examination Handbook