.spoke-cta{margin:24px 0}a.btn-join{display:inline-block;background:#2b6cb0;color:#fff!important;padding:12px 20px;border-radius:8px;font-weight:600;text-decoration:none;line-height:1.4}.spoke-q>li{margin:0 0 22px}.spoke-q ul{margin:6px 0 6px 18px}.spoke-table{border-collapse:collapse;width:100%;margin:18px 0}.spoke-table th,.spoke-table td{border:1px solid #d6dee8;padding:8px 12px;text-align:left;vertical-align:top}.spoke-table thead th{background:#f0f5fa}.spoke-sources{margin-top:32px;padding-top:16px;border-top:1px solid #e2e8f0;font-size:.92em;color:#4a5568}.spoke-sources a{word-break:break-word}
The Oncology Certified Nurse exam from ONCC is built on the OCN Test Content
Outline. Here’s the format and how the content is weighted.
Exam format
| Item | Detail |
|---|---|
| Questions | 165 (145 scored, 20 unscored) |
| Time | 3 hours |
| Format | Multiple choice, single best answer |
The six content areas
| Area | Weight |
|---|---|
| Symptom Management and Supportive Care | 25% |
| Treatment Modalities | 20% |
| Oncologic Emergencies | 16% |
| Oncology Nursing Practice | 15% |
| Care Continuum | 14% |
| Psychosocial Dimensions of Care | 10% |
What this means for studying
Symptom management is the single biggest area at 25%, and combined with Treatment Modalities
(20%) and Oncologic Emergencies (16%), the clinical core is over 60% of the exam. Don’t neglect the
care continuum and psychosocial care, though — survivorship, prevention, and supportive
communication are tested too.
Unlock 3,000+ OCN practice questions across 15 full-length simulators — $19.99 lifetime →
Sources & references
The exam facts on this page are drawn from official certifying-body materials, reviewed 2026-06-18 by the DrCertifications exam-prep team (10+ years in exam preparation and publishing).