CORLN Certification: Eligibility, Exam, and Renewal
For nurses specializing in ear, nose, and throat care, certification is optional: the Certified Otorhinolaryngology Nurse (CORLN) credential is not a state requirement, but it signals a depth of knowledge that can accelerate career growth and differentiate you in a competitive job market. Weighing the upfront cost and study commitment against long-term professional payoff is a personal decision, and the details below will help you make an informed one.
What Is CORLN Certification?
The CORLN credential is awarded by the National Certifying Board for Otorhinolaryngology and Head-Neck Nurses (NCBOHN), an independent body that administers the exam on behalf of the Society of Otorhinolaryngology and Head-Neck Nurses (SOHN). It validates advanced clinical competence in caring for patients with conditions of the ears, nose, throat, and related structures. Holding the CORLN designation tells employers and colleagues that you have met a national standard, even though the certification is entirely voluntary.
Eligibility Requirements
To sit for the CORLN exam you need an active, unrestricted RN license in the United States or Canada. While the certifying board does not mandate a specific number of practice hours, it strongly recommends that applicants have at least three years of experience in otorhinolaryngology nursing. This experience should encompass direct patient care, patient education, and clinical decision-making in ENT settings. There are no prerequisite continuing education hours to apply, but the content assumes a seasoned nurse’s clinical judgment. SOHN membership is not required, though members receive a reduced exam fee.
Exam Format and Content Domains
The exam consists of 250 multiple-choice questions, administered in a single 3.5-hour session. The questions are distributed across four content domains: conditions (25% of the exam), assessment (25%), interventions (40%), and professional issues (10%). Conditions cover common ENT pathologies, from sinusitis to head and neck cancers; assessment includes diagnostic tests and physical examinations; interventions range from medication management to surgical assistance; and professional issues address ethics, research, and patient education.
Testing occurs during two windows each year, typically in spring and fall. For 2026, the spring application deadline is April 8, with the testing window running May 9 through May 23. Scores are released within four weeks of the window closing. SOHN does not publicly report pass rates, so candidates should prepare thoroughly using the available practice test ($75) and recommended study materials.
Costs and Testing Logistics
The exam fee is $325 for SOHN members and $425 for non-members. A non-refundable administrative fee of $75 is also charged at application. Exams are delivered by a professional testing partner at secure computer-based centers nationwide. The practice test, available for purchase, mirrors the exam format and can help you gauge readiness. Given the $100 difference in fees, joining SOHN may be cost-effective if you plan to maintain certification long-term.
Renewal: Keeping Your Credential Active
CORLN certification is valid for five years. To renew, you must document 100 contact hours of continuing education in otorhinolaryngology nursing or a related field during that five-year cycle. The renewal fee is the same as the initial exam fee: $325 for SOHN members, $425 for non-members. Applications for renewal should be submitted at least two months before your certification expires to avoid a lapse. As with initial certification, SOHN membership offers a discount, making it a practical consideration if you value the credential.
Is CORLN Certification Worth It?
Because the credential is voluntary, you might wonder whether it justifies the effort. For many ENT nurses, the answer is yes. It can strengthen your resume for promotions, lead to roles with greater autonomy, and in some workplaces directly increase earning potential. While there is no guarantee of a salary bump, the certification demonstrates a commitment to the specialty that many employers recognize. Ultimately, the choice hinges on whether the investment aligns with your career goals and timeline.