CPHON Certification Cost 2026: Complete Pricing Breakdown

CPHON Certification Cost Overview for 2026

If you're a pediatric hematology/oncology nurse weighing whether to sit for the CPHON exam, the first number you need is the fee itself. The Oncology Nursing Certification Corporation (ONCC), which administers CPHON through PSI test centers, charges $300 for members of the Oncology Nursing Society (ONS) or the Association of Pediatric Hematology/Oncology Nurses (APHON), and $420 for nonmembers. That $120 gap is the single biggest lever you control before test day, and it's worth addressing before you even think about study materials.

Unlike some nursing certifications that bundle in review courses or practice exams, the CPHON fee covers exactly one thing: your seat at a PSI testing center (or an approved remote-proctoring option, depending on availability) for a single attempt at the 165-question exam. Everything else - CE hours, study guides, practice questions, travel to a test center - is a separate line item you'll need to budget on your own.

The ONS/APHON Membership Discount

The $300 versus $420 pricing tier isn't a marketing gimmick - it's ONCC's way of rewarding nurses who are already engaged with the professional organizations that shape pediatric oncology nursing practice. If you're not yet a member of ONS or APHON, it's worth running the numbers before registration:

• Compare current annual membership dues against the $120 savings on the exam fee.
• Factor in other member benefits, like discounted conference registration or access to APHON's core curriculum resources.
• Remember that membership status is verified at registration, so you'll need to join (or renew) before you submit your CPHON application, not after.

For many candidates, membership pays for itself through the exam discount alone, before you even count continuing education access or journal subscriptions.

Beyond the Exam Fee: Costs Candidates Forget

The $300-$420 registration fee is the headline number, but it's rarely the total cost of becoming CPHON-certified. Before you build a budget, account for these frequently overlooked expenses:

• Continuing education hours: You need 10 contact hours of oncology or hematology nursing CE (or an academic elective) in the preceding 3 years, with no more than 5 hours from CME or CPE. If you don't already have these logged, courses or conference sessions can carry their own fees.
• Study materials: Review manuals, question banks, and practice exams aren't included in your ONCC fee. Many candidates budget separately for a structured CPHON study guide and a bank of practice questions to simulate the four-option, one-best-answer format.
• Travel and time off: PSI test centers aren't in every city, so factor in mileage, parking, or a hotel stay if your nearest center is a drive away.
• Verification and documentation: Gathering employer verification of your 2,000 practice hours can take administrative time, even if it doesn't carry a direct fee.

What Your Fee Actually Buys: Exam Format

It helps to know exactly what's on the other side of that payment. Your fee buys a single attempt at a computer-based exam consisting of 165 four-option, one-best-answer multiple-choice questions - 125 of which are scored and 40 of which are unscored pretest items used to evaluate future exam content. You won't know which is which, so every question deserves full attention.

The session runs 3 hours total, which includes a 15-minute tutorial at the start and a post-test survey at the end. There are no scheduled breaks during the exam itself, so pacing across all 165 items matters. To pass, you need a scaled score of 55 on a 25-75 scale - not a raw percentage - which is explained in more detail in our breakdown of the CPHON passing score.

Every question draws from the six-domain blueprint built on the 2021 role delineation study. If you want a granular look at how those domains are weighted and tested, see our full CPHON exam domains guide.

Eligibility Costs Before You Even Register

ONCC won't let you pay the fee until you meet eligibility, so it's worth understanding those requirements as part of your overall cost planning. You need:

• An active, unencumbered RN license (U.S., territorial, or Canadian).
• 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/hematology nursing CE (or an academic elective) within the preceding 3 years, with no more than 5 CME/CPE hours counted.

None of these have a direct ONCC price tag, but they can carry indirect costs - CE course fees, time spent tracking hours, or delayed registration while you accumulate the required practice time. For a full walkthrough of how to document and verify each requirement, read our detailed CPHON requirements guide before you submit payment.

Retake Costs If You Don't Pass

There's no discounted "retake fee" for CPHON - if you don't pass on your first attempt, you pay the full $300 or $420 fee again to register for another 90-day testing window. This is the single strongest financial argument for treating your first attempt as your only attempt.

The 2025 data shows an initial-candidate pass rate of 69% and an overall pass rate of 68%, figures explored in depth in our CPHON pass rate analysis. Those numbers underscore that a meaningful share of candidates end up paying the fee more than once. If you're unsure how demanding the exam actually is relative to your experience level, our guide on how hard the CPHON exam really is can help you calibrate your preparation timeline - and, by extension, avoid a second registration fee.

Renewal Costs Every 4 Years

CPHON certification is valid for 4 years. Renewal 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: Accumulated through continuing education and related activities.
• Retesting: Sitting for the exam again instead of documenting hours or points.

Each renewal pathway carries its own indirect costs - CE course fees for the professional-development route, or another exam fee if you choose retesting. Planning which two components you'll pursue well before your 4-year window closes can help you spread those costs out rather than facing them all at once.

Budgeting Your Study Timeline Around the Six Domains

Since a failed attempt means paying the fee twice, it's worth aligning your study schedule with the domains most likely to determine your score - particularly Symptom Management and Supportive Care at 26%, and the two 21% domains, Treatment Modalities and Side Effects and Pediatric Hematologic and Oncologic Emergencies. Together these three domains account for the bulk of the 125 scored questions.

For a domain-by-domain content checklist rather than a scheduling template, our CPHON study guide goes deeper into what to actually study within each block above.

Is the Price Tag Worth It?

Whether $300-$420 (plus study costs) is a good investment depends heavily on your career goals. CPHON is widely recognized by pediatric oncology units, children's hospitals, and specialty cancer centers as a marker of validated expertise in the field. If you're evaluating whether the certification translates into career or compensation advantages, our CPHON ROI analysis and CPHON salary guide both dig into this question using the data currently available, without guessing at numbers ONCC hasn't published.

At minimum, the certification fee buys you a standardized, third-party-verified credential built on a rigorous six-domain blueprint - one that many employers list as a distinguishing qualification for senior pediatric oncology nursing roles.

Frequently Asked Questions