OCN Practice Test
Updated October 2026Facts verified Oct 26, 2026 against Oncology Nursing Certification Corporation
The OCN has 165 questions, takes about 3 hours and costs $420[1][2] (Oncology Nursing Certification Corporation, verified Oct 26, 2026).
- The OCN test has 165 multiple-choice questions, of which 145 count toward the score and 20 are pretest questions.[1]
- The OCN test session lasts three hours, including 15 minutes for the computer-based testing tutorial and post-test survey.[1]
- The passing score for the OCN test is a scaled score of 55 on a 25–75 scale.[1]
- The OCN test fee is $420 for non-members and $300 for ONS/APHON members.[2]
- The ONCC DoubleTake retake option costs an additional $100 and must be purchased at the time of initial application.[1]
- With the DoubleTake option, OCN candidates must apply for the second attempt within 180 days of the first test attempt.[1]
- OCN certification is valid for four years after passing the test.[2]
- ONCC certifications are renewed through one of three options combining practice hours, professional development points and testing, with an October 15 final application deadline in the year of expiry.[3]
- The OCN test is delivered by computer-based testing at more than 1,500 PSI test centers worldwide.[1]
Numbers in brackets link to the official sources listed under Sources & last verified. Dates that have passed are removed automatically.
OCN Exam at a Glance
| Item | Detail | Source · Verified |
|---|---|---|
| Number of questions | 165 multiple-choice questions (145 scored, 20 pretest)[1] | Oncology Nursing Certification Corporation · Oct 25, 2026 |
| Time limit | 3 hours, including a 15-minute tutorial[1] | Oncology Nursing Certification Corporation · Oct 25, 2026 |
| Passing score | Scaled score of 55 (scale 25–75)[1] | Oncology Nursing Certification Corporation · Oct 25, 2026 |
| Exam fee | $420 nonmember / $300 ONS/APHON member[2] | Oncology Nursing Certification Corporation · Oct 26, 2026 |
| Retake fee | $100 DoubleTake option[1] | Oncology Nursing Certification Corporation · Oct 25, 2026 |
| Retake policy | DoubleTake: apply for retake within 180 days of first attempt[1] | Oncology Nursing Certification Corporation · Oct 25, 2026 |
| Validity | 4 years[2] | Oncology Nursing Certification Corporation · Oct 26, 2026 |
| Renewal | Practice hours + points, or testing; early-bird Sept 15, final deadline Oct 15 of expiry year[3] | Oncology Nursing Certification Corporation · Oct 26, 2026 |
| Delivery | Computer-based at PSI test centers[1] | Oncology Nursing Certification Corporation · Oct 25, 2026 |
| Score release | On screen immediately; emailed within 1 hour[1] | Oncology Nursing Certification Corporation · Oct 25, 2026 |
| Testing window | Year-round in US/Canada; 90-day ATT window[1] | Oncology Nursing Certification Corporation · Oct 25, 2026 |
What changed for OCN in 2026
- Oct 25, 2026: Renewal changed to Practice hours + points, or testing; early-bird Sept 15, final deadline Oct 15 of expiry year (previously Practice hours + points, or testing; final deadline Oct 15 of expiry year).[3]
- Oct 25, 2026: Retake fee changed to $100 DoubleTake option (previously $100 DoubleTake option (bought at initial application)).[1]
- Oct 25, 2026: Retake policy changed to DoubleTake: apply for retake within 180 days of first attempt (previously DoubleTake retake: apply within 180 days of first attempt).[1]
- Oct 25, 2026: Score release changed to On screen immediately; emailed within 1 hour (previously On screen right after the exam; emailed within 1 hour).[1]
OCN Practice Questions
Preparing for the Oncology Certified Nurse (OCN) exam takes a great deal of time and effort, and many nurses invest significant resources to prepare. These resources may include completing specialized oncology courses, attending nursing conferences, participating in study groups, and reviewing extensive study materials. In addition, nurses must meet the requirements to take the OCN exam, including a valid registered nurse license, 1,000 hours of adult oncology nursing experience and a minimum of one year of nursing practice.
With OCN practice test questions, you can get the practice you need to succeed on your exam. These practice tests provide you with the opportunity to see how well you are prepared for the test, and they also give you a clear picture of which areas need improvement. In addition, OCN practice test answers come with detailed answer explanations. This allows you to understand why a question was answered incorrectly so that you can avoid making the same mistake on your exam.
How Hard is the OCN Exam
The Oncology Certified Nurse (OCN) exam is a challenging test for nurses to take. It requires advanced nursing skills and knowledge of oncology nursing practice. To be successful on this exam, nurses should spend weeks and months preparing for it. Fortunately, there are many resources available to help prepare for this exam. Practice with the free OCN practice test on PracticeTestGeeks (7 questions with answer explanations).
The most important resource is the test content outline, which shows what each topic covers and how much of the exam it makes up. This is especially useful for determining what areas to focus on. You should also remember that generic drug names are used on the exam, so it is important to memorize these.
The OCN Study Guide is a comprehensive and easy-to-use guide to help you pass the exam. It outlines the major topics in oncology nursing and provides strategies for mastering each of them. The guide is organized so that each section naturally flows from the previous one, making it easy to follow and understand. The content is updated regularly, so you can be sure that you are studying the most current and relevant information.
Free OCN Exam Study Tools
Interactive OCN Exam resources on PracticeTestGeeks, free to start:
- Free OCN General Questions and Answers — 7 questions with answer explanations
- OCN Exam flashcards — review key terms and concepts card by card
- OCN Exam study guide — topic-by-topic overview of what the exam covers
- OCN Exam cheat sheet — one-page printable summary for last-minute review
According to Oncology Nursing Certification Corporation, “The OCN® Test consists of 165 multiple-choice questions (a question or incomplete statement followed by four answers or completions). Of those, 145 questions count toward the candidate’s score and 20 are pretest”[1]
OCN Practice Test Questions
Prepare for the OCN Exam exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.
OCN Cancer Biology and Pathophysiology
OCN Test Prep for Cancer Biology and Pathophysiology. Practice OCN Quiz questions and boost your score.
OCN Cancer Treatment Modalities
OCN Questions and Answers on Cancer Treatment Modalities. Free OCN practice for exam readiness.
OCN Chemotherapy Administration
OCN Mock Test covering Chemotherapy Administration. Online OCN Test practice with instant feedback.
OCN Oncologic Emergencies
OCN Study Material on Oncologic Emergencies. Prepare effectively with real exam-style questions.
OCN Oncology Pharmacology
Free OCN Test covering Oncology Pharmacology. Practice and track your OCN exam readiness.
OCN Patient Education and Psychosocial Care
OCN Exam Questions covering Patient Education and Psychosocial Care. Master OCN Test concepts for certification prep.
OCN Patient Education and Survivorship
Free OCN Practice Test featuring Patient Education and Survivorship. Improve your OCN Exam score with mock test prep.
OCN Radiation Therapy Nursing
OCN Mock Exam on Radiation Therapy Nursing. OCN Study Guide questions to pass on your first try.
Worked examples: how to reason through OCN questions
These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.
Example 1
Question: 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
- Reading written instructions aloud to the patient
- Testing the patient with a multiple-choice quiz
- Showing a video and asking if they have questions
Answer: A. Asking the patient to explain the information back in their own words to confirm understanding
Explanation:
The correct answer is asking the patient to explain the information back in their own words. This lets the nurse see what the patient actually understood, and fix gaps before discharge.
Reading written instructions aloud only delivers information in one direction. It tells you nothing about what the patient took in. A multiple-choice quiz is a test of recall rather than a conversation, and it can feel like being graded, so patients may hide confusion. Showing a video and asking if there are questions depends on the patient noticing and admitting what they do not understand.
Rule to remember: in patient education, confirm understanding by having the patient say or show it, and treat the gap as the nurse's job to close, not the patient's fault.
Example 2
Question: A cancer patient is receiving high-dose methotrexate. What is the primary antidote used to rescue normal cells?
- Mesna
- Leucovorin (folinic acid)
- Amifostine
- Dexrazoxane
Answer: B. Leucovorin (folinic acid)
Explanation:
The correct answer is leucovorin (folinic acid). Methotrexate blocks an enzyme in the folate pathway. Leucovorin supplies a usable form of folate that bypasses the block, so normal cells are rescued from folate depletion.
Mesna is wrong because it protects the bladder from toxic metabolites of drugs such as ifosfamide, not from methotrexate. Amifostine is wrong because it is a cytoprotectant used mainly for kidney and salivary gland protection with certain therapies. Dexrazoxane is wrong because it is used to protect the heart from anthracycline damage.
Rule to remember: rescue and protective agents are paired with specific drugs. Learn each pairing as drug, toxicity, and agent.
Example 3
Question: During a blood product transfusion, a patient reports chills, back pain, and dark urine 15 minutes into the infusion. The nurse's priority action is to:
- Slow the transfusion rate and observe for improvement
- Administer diphenhydramine and continue the transfusion
- Stop the transfusion immediately and maintain IV access with normal saline
- Increase the flow rate to complete the transfusion quickly
Answer: C. Stop the transfusion immediately and maintain IV access with normal saline
Explanation:
The correct answer is to stop the transfusion immediately and keep IV access open with normal saline. Chills, back pain and dark urine 15 minutes into the infusion point to an acute hemolytic reaction, and every additional minute of incompatible blood adds harm.
Slowing the rate and watching is wrong because it keeps giving the offending product. Giving diphenhydramine and continuing is wrong because an antihistamine treats mild allergic reactions, not hemolysis, and the infusion still continues. Increasing the flow rate is the most dangerous choice because it delivers more incompatible blood faster.
Rule to remember: with a suspected serious transfusion reaction, stop the product first, keep the line open with saline, then notify and follow protocol.
How to use these practice tests
Start with the official material. Read the ONCC OCN page and the test registration manual so you know the format, the scoring, and the retake option before you study content.
Next, take one of our broad sets, such as OCN General, as a baseline. Do not treat the score as a prediction. Use it to see which topics feel weakest.
Then work through the topic sets that match your gaps, for example Oncology Pharmacology, Oncologic Emergencies and Symptom Management. For every miss, read the explanation and write one line on the rule behind it. Review those lines instead of re-reading whole chapters.
Mix in Radiation Therapy Nursing and Chemotherapy Administration so treatment topics stay fresh. Near test day, use the timed practice test to get used to sitting through a long session. Our questions are written by us and are not real exam questions, so rely on your nursing references for clinical detail.
OCN Review Course
The ocn review course is an important part of the nursing education process. It provides RNs with the knowledge they need to work in oncology nursing, while also demonstrating to employers and patients that the nurse has advanced specialty training and expertise. Taking this exam can increase job opportunities and help nurses feel more confident in their skills.
While the OCN exam is not an easy test to pass, with proper study and preparation it can be done. The best way to prepare is by using an OCN study guide that provides comprehensive content and information in a logical order. The OCN study guide from is designed to be clear and accessible and lays out each section in a way that makes sense.
The OCN study guide includes multiple practice exams and a library of 500+ digital flash cards to help students remember terms, medications, and other important information. It is also available in an online format that can be accessed from any device. Additionally, the OCN study guide features analytics and reports to identify areas that require further study.
- +Industry-recognized credential boosts your resume
- +Higher earning potential (10-20% salary increase on average)
- +Demonstrates commitment to professional development
- +Opens doors to advanced career opportunities
- −Exam preparation requires significant time investment (4-8 weeks)
- −Certification fees can be $100-$400+
- −May require continuing education to maintain
- −Some employers may not require certification
Sample OCN Exam Practice Questions
Try these questions from our free OCN Exam practice tests. The correct answer and an explanation follow each question.
Which domain represents the largest portion of the OCN exam blueprint?
- A. Symptom Management
- B. Oncology Nursing Practice
- C. Treatment Modalities
- D. Health Promotion
Answer: A. Symptom Management
Symptom Management consistently represents the largest percentage of questions on the OCN exam blueprint.
A patient receiving whole-brain radiation therapy reports significant fatigue. Which nursing intervention is most appropriate?
- A. Encourage the patient to push through fatigue and maintain a normal activity schedule
- B. Advise complete bed rest for the entire duration of radiation treatment
- C. Teach energy conservation strategies and encourage light activity balanced with rest
- D. Refer immediately to the hematology team for erythropoietin therapy
Answer: C. Teach energy conservation strategies and encourage light activity balanced with rest
Energy conservation techniques and a balance of activity and rest are the evidence-based first-line approach for managing radiation-induced fatigue without unnecessary deconditioning.
Which oncogene is frequently amplified in HER2-positive breast cancer, making it a therapeutic target?
- A. ERBB2 (HER2/neu)
- B. KRAS
- C. MYC
- D. BCL-2
Answer: A. ERBB2 (HER2/neu)
ERBB2 gene amplification produces excess HER2 protein on the cell surface, driving uncontrolled cell proliferation in HER2-positive breast cancer.
A cancer patient is receiving high-dose methotrexate. What is the primary antidote used to rescue normal cells?
- A. Mesna
- B. Leucovorin (folinic acid)
- C. Amifostine
- D. Dexrazoxane
Answer: B. Leucovorin (folinic acid)
Leucovorin (folinic acid) rescue bypasses the dihydrofolate reductase blockade caused by methotrexate, protecting normal cells from folate depletion toxicity.
Take the full OCN Exam practice test
OCN Exam Questions and Answers
Sources & last verified
- Oncology Nursing Certification Corporation — number of questions, time limit, passing score, retake fee (official source). “The OCN® Test consists of 165 multiple-choice questions (a question or incomplete statement followed by four answers or completions). Of those, 145 questions count toward…” Verified Oct 25, 2026.
- Oncology Nursing Certification Corporation — exam fee, validity (official source). “Non-member: $420; ONS/APHON Member: $300” Verified Oct 26, 2026 · source checked Oct 26, 2026.
- Oncology Nursing Certification Corporation — renewal (official source). “October 15 by 11:59pm ET (of year certification expires): Final application deadline date.” Verified Oct 26, 2026 · source checked Oct 26, 2026.
How we verify: editorial & fact-checking policy. Report an error: contact us.
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