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The ONCC Certified Breast Care Nurse exam is built on the CBCN Test Content
Outline. Here’s the format and how it’s weighted.
Exam format
| Item | Detail |
|---|---|
| Questions | 165 (125 scored, 40 unscored) |
| Time | 3 hours |
| Format | Multiple choice, single best answer |
The five subject areas
| Area | Weight |
|---|---|
| Nursing Practice | 28% |
| Coordination of Care | 26% |
| Local and Systemic Therapies | 18% |
| Diagnosis and Staging | 17% |
| Psychosocial and Spiritual | 11% |
What this means for studying
Nursing Practice (28%) and Coordination of Care (26%) are over half the exam — the
day-to-day of guiding patients through breast care. But the clinical specifics in Diagnosis and Staging
(17%) and Local and Systemic Therapies (18%) — receptor status, staging, surgery, radiation, and
systemic treatment — are where many questions turn.
Unlock 2,100+ CBCN 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).