- Exam Snapshot: The Numbers You Need Cold
- The Six Domains at a Glance
- Domain 4 Deep Dive: Symptom Management and Supportive Care
- Pediatric Hematologic and Oncologic Emergencies Cheat Points
- Eligibility and Registration Cheat Sheet
- Question Style and Format Reminders
- Final-Week Review Schedule
- Renewal and Recertification Facts
- Frequently Asked Questions
- The exam has 165 questions (125 scored) in a 3-hour session with no scheduled breaks.
- Symptom Management and Supportive Care is the largest domain at 26% of the exam.
- Passing requires a scaled score of 55 on a 25-75 scale, not a raw percentage.
- Eligibility needs 2,000 pediatric hematology/oncology hours and 10 CE contact hours within set windows.
Exam Snapshot: The Numbers You Need Cold
Before you touch a single practice question, memorize the mechanics of the test itself. The Oncology Nursing Certification Corporation (ONCC) owns and administers CPHON, and PSI runs the actual test centers. Every candidate should be able to recite these facts without hesitating:
- Format: 165 four-option, one-best-answer multiple-choice items - 125 scored, 40 unscored pretest questions you cannot identify during the test.
- Time: A 3-hour session that includes a 15-minute tutorial and a post-test survey. There are no scheduled breaks.
- Passing standard: A scaled score of 55 on a 25-75 scale, not a fixed percentage of correct answers.
- Fees: $300 for Oncology Nursing Society or Association of Pediatric Hematology/Oncology Nurses members; $420 for nonmembers.
- Scheduling window: A 90-day PSI testing window once you're approved.
If any of these details feel fuzzy, spend time with the full CPHON Study Guide 2026: How to Pass on Your First Attempt before moving into content review - knowing the test's structure changes how you pace practice sessions.
The Six Domains at a Glance
CPHON's 2026 manual is built on a six-domain blueprint drawn from the 2021 role delineation study. Every scored question maps to one of these domains, and the weighting tells you exactly where to spend your study hours.
| Domain | Weight | Core Focus |
|---|---|---|
| 1. Care Continuum | 6% | Diagnosis through survivorship or end-of-life transitions |
| 2. Pediatric Hematology and Oncology Nursing Practice | 18% | Disease processes, staging, diagnostics |
| 3. Treatment Modalities and Side Effects | 21% | Chemotherapy, radiation, transplant, biotherapy |
| 4. Symptom Management and Supportive Care | 26% | Pain, nausea, infection risk, nutrition, mucositis |
| 5. Pediatric Hematologic and Oncologic Emergencies | 21% | Sepsis, tumor lysis, spinal cord compression, cardiac tamponade |
| 6. Psychosocial Dimensions of Care | 8% | Family coping, developmental stage, communication |
Notice that Domains 3, 4, and 5 together make up 68% of the scored exam. That's the real center of gravity for your review - treatment side effects, supportive care, and emergencies. For a domain-by-domain breakdown with sample content lists, see CPHON Exam Domains 2026: Complete Guide to All 6 Content Areas.
Domain 1: Care Continuum (6%)
Smallest domain but easy to underestimate. Covers the trajectory from diagnosis to survivorship, relapse, or palliative transition.
- Late effects screening timelines for survivors
- Transition-of-care documentation and handoffs
- Palliative versus hospice distinctions in pediatrics
Domain 2: Pediatric Hematology and Oncology Nursing Practice (18%)
Foundational disease knowledge - the "what is it" layer that everything else builds on.
- Leukemia, lymphoma, and solid tumor classifications
- Sickle cell disease and hemophilia pathophysiology
- Diagnostic workups: bone marrow aspirate, lumbar puncture, imaging
Domain 4 Deep Dive: Symptom Management and Supportive Care
Because this domain carries 26% - more than a quarter of the scored questions - it deserves its own section rather than a bullet in a general list. Symptom Management and Supportive Care questions test your ability to anticipate and manage the physical fallout of both disease and treatment, often in scenario form rather than as isolated fact recall.
Domain 4: Symptom Management and Supportive Care (26%)
Expect vignette-style questions asking you to prioritize interventions for a specific patient presentation.
- Mucositis grading and oral care protocols
- Chemotherapy-induced nausea and vomiting: antiemetic classes and timing
- Neutropenic precautions and infection prevention
- Nutrition support for treatment-related anorexia and cachexia
- Pain assessment tools appropriate across pediatric developmental stages
Because this domain overlaps heavily with Domain 3 (Treatment Modalities and Side Effects) and Domain 5 (Pediatric Hematologic and Oncologic Emergencies), many candidates report that these three domains blur together during study. Treat them as a connected cluster: a chemotherapy agent's known side effect (Domain 3) often becomes the symptom you manage (Domain 4), which can escalate into an emergency (Domain 5) if unmanaged.
Key Takeaway
Study Domains 3, 4, and 5 together, not separately. Map each major chemotherapy or biotherapy agent to its expected side effects, the supportive care response, and the emergency it could trigger if untreated.
Pediatric Hematologic and Oncologic Emergencies Cheat Points
Domain 5 sits at 21% and is where many candidates lose points simply because emergencies are less frequently encountered in daily practice than routine symptom management. Use this quick-reference list as your final review pass:
- Tumor lysis syndrome: electrolyte pattern (elevated potassium, phosphate, uric acid; low calcium) and prevention with hydration and rasburicase or allopurinol.
- Superior vena cava syndrome: facial swelling, dyspnea, and positioning interventions.
- Spinal cord compression: back pain preceding neurologic deficit - recognize early to prevent permanent injury.
- Sepsis and septic shock in neutropenic patients: time-to-antibiotic targets and recognition of subtle early signs.
- Hyperleukocytosis and leukostasis: risk in newly diagnosed leukemia with very high white blood cell counts.
- Cardiac tamponade and pericardial effusion: associated with certain solid tumors and mediastinal masses.
If you're unsure how heavily emergencies weigh against other content, the CPHON Exam Domains 2026: Complete Guide to All 6 Content Areas breaks down subtopics within each blueprint area in more detail than a one-page cheat sheet can hold.
Eligibility and Registration Cheat Sheet
CPHON eligibility has four separate requirements, and missing one of them is the most common reason candidates get delayed at application review. Confirm each before you submit:
- An active, unencumbered RN license (U.S., a U.S. territory, or Canada).
- 2 years of RN experience within the preceding 4 years.
- 2,000 hours of pediatric hematology/oncology nursing practice within the preceding 4 years.
- 10 contact hours of oncology or hematology nursing continuing education (or an academic elective) within the preceding 3 years, with no more than 5 of those hours coming from CME or CPE.
For a full walkthrough of documentation and verification steps, see CPHON Requirements 2026: Eligibility, Prerequisites & How to Qualify. If cost planning is part of your decision, CPHON Certification Cost 2026: Complete Pricing Breakdown lays out the full fee structure, and CPHON Exam Dates 2026: Testing Windows, Deadlines & Scheduling explains how the 90-day PSI window actually functions once you're approved.
Question Style and Format Reminders
CPHON questions are written as one-best-answer, four-option multiple choice - there's no "select all that apply" format to worry about, but that doesn't make the questions simple. Most items are scenario-based: a short pediatric patient case followed by a question asking what you'd prioritize, assess first, or intervene with next.
- Drug names appear in generic form throughout the exam, so know generic names cold, not just brand names you may hear in clinical practice.
- 40 of the 165 questions are unscored pretest items mixed in with scored questions - you won't be able to tell which is which, so treat every question with equal focus.
- There is no partial credit for reasoning; you're scored on the final answer choice only.
Because the tutorial and survey are built into the 3-hour session and there are no scheduled breaks, practice answering timed question sets in one sitting so pacing feels familiar on test day. For a broader discussion of what makes this exam genuinely challenging, read How Hard Is the CPHON Exam? Complete Difficulty Guide 2026.
Final-Week Review Schedule
A cheat sheet is most useful in the final stretch before your test date, when you're consolidating rather than learning new material. Here's a compressed final-week structure built around the domain weights above rather than generic study advice:
Domains 3 & 4 (47% combined)
- Review chemotherapy agent side-effect tables
- Drill mucositis, CINV, and neutropenic precaution protocols
- Practice generic drug name recall
Domain 5 Emergencies (21%)
- Rehearse tumor lysis lab patterns
- Review sepsis recognition timelines
- Practice scenario questions on spinal cord compression and SVC syndrome
Domain 2 & Domain 1 (24% combined)
- Review disease classification and diagnostic workups
- Confirm survivorship and care-transition knowledge
Domain 6 & Full Timed Practice Set
- Review psychosocial and family coping content
- Take one full timed 165-question practice run
Run your final timed practice set on our CPHON practice test platform so the question format and pacing match what you'll see at the PSI test center, not just what you've reviewed in notes.
Renewal and Recertification Facts
CPHON certification is valid for 4 years. Renewal isn't automatic - it requires maintaining active RN status plus completing two of three components:
- Qualifying practice: 1,000 pediatric hematology/oncology nursing hours within the prior 30 months.
- Professional development or learning-plan points: continuing education tied to the role.
- Retesting: sitting the exam again as your renewal pathway.
Plan renewal tracking the same way you plan initial eligibility - don't wait until the 4-year mark to check your hours. If you're still weighing whether the credential is worth pursuing in the first place, Is the CPHON Certification Worth It? Complete ROI Analysis 2026 and CPHON Salary Guide 2026: Complete Earnings Analysis cover the career-side considerations, while CPHON Jobs outlines the types of units and employers that specifically look for this credential.
Frequently Asked Questions
There are 165 total questions: 125 are scored and 40 are unscored pretest items used by ONCC for future exam development. You won't know which is which during the test.
Symptom Management and Supportive Care at 26% is the single largest domain, followed closely by Treatment Modalities and Side Effects and Pediatric Hematologic and Oncologic Emergencies, each at 21%. Together these three domains cover 68% of scored content.
You need a scaled score of 55 on a 25-75 scale, which is not the same as answering 55% of questions correctly since items are weighted by difficulty. See CPHON Passing Score 2026: Exactly What You Need to Pass for full detail.
The exam fee is $300 for ONS or APHON members and $420 for nonmembers. Full cost breakdowns, including any retake fees, are covered in CPHON Certification Cost 2026: Complete Pricing Breakdown.
The 2026 CPHON manual and exam use generic drug names throughout, so build your recall around generic names rather than the brand names you may use more often in clinical documentation.