The OCN (Oncology Certified Nurse) is a nursing certification awarded by ONCC.
ONCC publishes the official exam outline, eligibility rules and fees — see ONCC's official page before you book.
In our 1050-card OCN deck the heaviest topics are Management (40%), Pathology (16%), Basics (13%) — that is how this deck is weighted, not the official blueprint, so use it to plan practice and check ONCC's exam outline for the real weighting. This guide shows where the material gets hardest, which topics to practise first, and a 5-step plan built on active recall.
Start with the free OCN practice test
20 mixed questions with answers — find your weak topics before you plan around them →
Based on the 1050 flashcards in our OCN deck. Use it to budget study time, then confirm the official blueprint with the certifying body below.
| Topic | Cards | Share of deck | Practice |
|---|---|---|---|
| Management | 420 | 40% | Free questions → |
| Pathology | 170 | 16% | Free questions → |
| Basics | 140 | 13% | Free questions → |
| Pharmacology | 120 | 11% | Free questions → |
| Assessment | 60 | 6% | Free questions → |
| Diagnostics | 50 | 5% | Free questions → |
| Procedures | 50 | 5% | Free questions → |
| Physiology | 20 | 2% | in the full deck |
| Legal | 10 | 1% | in the full deck |
Our OCN cards carry difficulty ratings. The spread tells you how much of the deck is quick recall versus genuinely demanding:
0
Easy cards
0% of deck
524
Medium cards
50% of deck
525
Hard cards
50% of deck
These are genuine cards from the heaviest-weighted topics above. Answer each one before you reveal it — that is what active recall means in practice.
A nurse is educating a patient on the Heplisav-B vaccine. How does this vaccine differ from traditional HBV vaccines (e.g., Engerix-B) in terms of schedule and components?
Show answer →Heplisav-B is a 2-dose series (administered 1 month apart), whereas traditional vaccines like Engerix-B or Recombivax HB require 3 doses over 6 months. Heplisav-B uses a yeast-derived recombinant surface antigen combined with a TLR9 agonist adjuvant (CpG 1018), which enhances the immune response, especially in older adults or those with diabetes. Strategy: Recognition of the 2-dose vs 3-dose schedule is a common exam point for adult oncology nurses.
In the context of viral carcinogenesis, what role does the Epstein-Barr Virus (EBV) play in the development of specific malignancies, and which patient population is at highest risk?
Show answer →EBV is associated with Burkitt lymphoma, Nasopharyngeal carcinoma, and Hodgkin lymphoma. It infects B-cells and epithelial cells, utilizing viral proteins (like LMP-1) to mimic CD40 signaling, promoting B-cell survival and proliferation. Post-transplant lymphoproliferative disorder (PTLD) is a major concern in immunosuppressed patients. Exam Tip: While HPV/HBV are high yield, EBV is the third major viral cancer link tested in the pathology section.
In 2026, which cancer type has shown the most significant increase in incidence related specifically to the rising prevalence of metabolic-associated steatotic liver disease (MASLD) and obesity?
Show answer →Hepatocellular Carcinoma (HCC) incidence is increasingly driven by MASLD (formerly NAFLD) and obesity, rather than just Hepatitis B or C. Rational: While antiviral therapies have reduced viral-related HCC, the metabolic syndrome epidemic has shifted the etiology. Clinical Pearl: Liver cancer incidence has risen faster than almost any other cancer in the last two decades. Exam Tip: ONCC focuses on modifiable risk factors; obesity is now linked to at least 13 different types of cancer, with liver and endometrial showing the strongest correlations.
Eligibility, fees, question counts and the current blueprint live on the official ONCC site (linked below). Print the outline — it is the map for everything that follows.
These 3 topics alone account for roughly 69% of our 1050-card OCN deck. Time spent here pays off more than anywhere else.
Answer questions before flipping to the answer — that struggle is what builds retention. Start with the 30 free OCN cards, then work through the full deck one category at a time.
After a full pass, re-drill only the cards you missed. Small categories are quick wins — closing a weak topic can be an afternoon's work.
Our deck rates 525 cards as hard. If those feel comfortable in your final two weeks, you are studying above test level.
Put the plan into practice
Every topic in the table above, with progress tracking across devices.
One-time payment · less than 1¢ per card · 30-day money-back guarantee
Try 30 free OCN cards firstWeight your time toward the biggest topics: in our 1050-card OCN deck, Management has 420 cards (40%), Pathology has 170 cards (16%), Basics has 140 cards (13%). Always cross-check against the official ONCC exam outline.
Question counts, time limits and fees change — always confirm them in the official ONCC handbook (linked on this page). For practice, our OCN deck has 1050 question-and-answer flashcards covering the listed topics.
Difficulty is personal, but our deck's ratings give a sense of the spread: 0 easy, 524 medium and 525 hard cards. If the hard cards feel manageable, you are in good shape.
Try the 30 free OCN flashcards — no sign-up needed. If the format works for you, the full 1050-card deck is a one-time $7.
Eligibility rules, fees, question counts and passing standards are set by the certifying body and change over time. Always confirm them at the source before you apply or schedule your exam — our flashcards are practice material, not the official handbook.