OCN Study Guide 2026

Everything you need to pass the OCN exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

OCN exam key facts

The OCN test has 165 multiple-choice questions, of which 145 count toward the score and 20 are pretest questions. Source
The OCN test session lasts three hours, including 15 minutes for the computer-based testing tutorial and post-test survey. Source
The passing score for the OCN test is a scaled score of 55 on a 25–75 scale. Source
The OCN test fee is $420 for non-members and $300 for ONS/APHON members. Source
With the DoubleTake option, OCN candidates must apply for the second attempt within 180 days of the first test attempt. Source
OCN certification is valid for four years after passing the test. Source

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📋 OCN Exam Format at a Glance

165

Questions

180 min

Time Limit

70.00%

Passing Score

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📚 OCN Topics to Study (40)

OCN General · 7 cards OCN MCQ · 7 cards OCN Trivia · 7 cards OCN General · 7 cards OCN General · 7 cards OCN General · 7 cards OCN General · 7 cards OCN MCQ · 7 cards OCN Trivia · 7 cards OCN Trivia · 7 cards OCN Trivia · 7 cards Radiation Therapy Nursing · 7 cards Radiation Therapy Nursing · 7 cards Cancer Biology and Pathophysiology · 6 cards Cancer Biology and Pathophysiology · 6 cards Cancer Biology and Pathophysiology · 6 cards Cancer Treatment Modalities · 6 cards Cancer Treatment Modalities · 6 cards Cancer Treatment Modalities · 6 cards Chemotherapy Administration · 6 cards Chemotherapy Administration · 6 cards Chemotherapy Administration · 6 cards Oncologic Emergencies · 6 cards Oncologic Emergencies · 6 cards Oncologic Emergencies · 6 cards Oncology Pharmacology · 6 cards Oncology Pharmacology · 6 cards Oncology Pharmacology · 6 cards Patient Education and Psychosocial Care · 6 cards Patient Education and Psychosocial Care · 6 cards

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✍️ Sample OCN Questions & Answers

1. The 'teachback' method in patient education is best described as:

✓ Asking the patient to explain the information back in their own words to confirm understanding

Teach-back is an evidence-based health literacy technique where the nurse asks the patient to restate information to verify comprehension before discharge.

2. Which of the following best prevents tumor lysis syndrome in high-risk patients starting chemotherapy?

✓ Allopurinol or rasburicase plus aggressive IV hydration

Allopurinol (or rasburicase for very high-risk cases) combined with aggressive IV hydration is the standard prophylaxis for TLS in high-risk patients.

3. Cachexia in cancer patients is best described as:

✓ A metabolic syndrome of weight loss, muscle wasting, and inflammation

Cancer cachexia is a complex metabolic syndrome driven by inflammation and tumor factors, causing involuntary weight loss and muscle wasting that cannot be fully reversed by nutrition alone.

4. Which early sign of increased intracranial pressure (ICP) from brain metastases should the oncology nurse recognize?

✓ Morning headache that improves upon sitting upright

Headache that is worst in the morning and improves when upright is a classic early sign of elevated ICP from brain metastases due to positional changes in cerebrospinal fluid pressure.

5. The MASCC risk index is used in oncology to:

✓ Identify low-risk febrile neutropenia patients eligible for oral antibiotics

The MASCC (Multinational Association for Supportive Care in Cancer) score stratifies febrile neutropenia into low vs. high risk, guiding outpatient vs. inpatient management.

6. Hot flashes in breast cancer survivors receiving aromatase inhibitors are best managed initially with which non-pharmacological approach?

✓ Lifestyle modifications including layered clothing, cool room temperatures, and avoiding triggers

Non-pharmacological strategies such as trigger avoidance, cool environments, and layered clothing are recommended first because estrogen is contraindicated in breast cancer.

🎯 Free OCN Practice Tests

OCN Trivia · 7 questions OCN Trivia · 7 questions Radiation Therapy Nursing · 7 questions OCN MCQ · 7 questions OCN General · 7 questions OCN Trivia · 7 questions OCN Trivia · 7 questions Radiation Therapy Nursing · 7 questions OCN MCQ · 7 questions OCN General · 7 questions

📖 OCN Guides & Articles

Your OCN Study Path

1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation

🃏 OCN Flashcards (253)🏆 OCN Exam Simulation

What Practice Test Geeks adds beyond an AI chat for OCN

An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:

A timed, full-length OCN mock exam — 165 questions in 180 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
A fixed OCN question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
A printable OCN cheat sheet you can print or save as a PDF.
OCN flashcards built from the same question bank.
Free OCN practice tests with the correct answer shown after each question.

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How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

oncc.org — Fees, score validity, renewal, test delivery, exam format, passing score, retake fee, retake policy, score release, test dates · verified Oct 2026