The CCRN exam is a 3 hour exam covering 150 multiple choice questions. The CCRN exams focus on three general populations: adult, pediatric and neonatal patients. Within the three general populations, the following subject categories are covered: Cardiovascular, Pulmonary, Endocrine, Hematology / Immunity, Neurology, Gastrointestinal, Renal, Multisystem, Behavior / Psychological and Professional Care and Ethical Practice. Each exam is age specific and a large percentage of each test focuses on clinical judgment. A smaller percentage of each test covers professional caring and ethical practice, which can address any age in the life span, in any of the tests.