A yellow banner reads "Mometrix COCN Practice Test: Prepare for your test with realistic questions." An illustration of a hand filling out a multiple-choice exam is visible on the right.

The Certified Ostomy Care Nurse (COCN®) is developed and maintained by the Wound, Ostomy, and Continence Certification Board (WOCNCB®). The COCN certification is for general practice nurses interested in moving to the specialized ostomy care field. This voluntary credential proves a nurse’s knowledge and qualifications through a rigorous and thorough examination and continuing education. Click … Read more