- Identity and Issuer in 30 Seconds
- Exam Format, Timing and Scoring
- Eligibility Snapshot
- Fees and Registration Mechanics
- The Two-Axis Blueprint: The Fact Most Candidates Misread
- Axis I Cheat Sheet: Patient Problems
- Axis II Cheat Sheet: Nursing Activities
- Pass Rate vs. Passing Standard
- Certification Period and Renewal Rules
- The Accreditation Caveat
- Sequencing Your Review by Weight
- Frequently Asked Questions
- CURN is issued by CBUNA: 150 single-best-answer questions, 3 hours, 70% passing standard, no guessing penalty.
- Initial fee is USD 325 for SUNA members and USD 420 for nonmembers; a discounted retake costs USD 225/320.
- The blueprint has two axes, each totaling 100%. Never add all 11 percentages together.
- Largest categories: obstructive uropathies and trauma (25%) and care planning and implementation (30%).
Identity and Issuer in 30 Seconds
The Certified Urologic Registered Nurse credential is awarded by the Certification Board for Urologic Nurses and Associates (CBUNA). The Society of Urologic Nurses and Associates (SUNA) hosts CBUNA's certification information on its website, but the two are separate organizations. That distinction matters in practice: SUNA membership is optional. It lowers your fees, but it is not a prerequisite for sitting the exam.
If you are brand new to the credential, start with What Is CURN Certification? for the big picture. This page is the compressed version: the facts you should be able to recite before exam day.
Exam Format, Timing and Scoring
| Element | Fact |
|---|---|
| Question count | 150 questions, including unscored pilot items |
| Question type | Single-best-answer multiple choice |
| Time limit | 3 hours |
| Guessing penalty | None, so answer every item |
| Passing standard | 70%, set using the Angoff procedure |
| Language | English |
Three hours for 150 questions works out to roughly 72 seconds per item. Because pilot items are mixed in and you cannot tell which ones they are, treat every question as scored. Because there is no penalty for wrong answers, never leave a blank. Flag the hard ones, move on, and return with leftover time.
The Angoff procedure means a panel of subject-matter experts judged how a minimally competent urologic nurse would perform on each item; the 70% standard comes from that process rather than from a curve against other candidates. For the full scoring explanation, see CURN Passing Score 2026: Exactly What You Need to Pass.
Eligibility Snapshot
For U.S. applicants, CBUNA requires all of the following:
- Completion of a nationally accredited nursing program
- Two years of RN experience
- At least 800 clinical urologic patient-care hours within the preceding three years
- A current, active, unrestricted RN license in the United States or its territories
International applicants must document approved nursing education and practice experience plus first-level general nursing registration. CBUNA may review transcripts, and the exam is administered in English. The 800-hour rule is the one that trips people up: it is a recency requirement, so urologic hours from five years ago do not count toward it. The full walkthrough is in CURN Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Fees and Registration Mechanics
| Item | SUNA Member | Nonmember |
|---|---|---|
| Initial exam | USD 325 | USD 420 |
| Discounted retake (within 12 months) | USD 225 | USD 320 |
| Continuing-education renewal | USD 250 | USD 275 |
The member/nonmember gap on the initial exam is USD 95. Whether membership pays for itself depends on its own dues and on whether you plan to renew by continuing education. Run those numbers before you decide; the pricing context is laid out in CURN Certification Cost 2026: Complete Pricing Breakdown. Note also that the retake discount applies only to a retake within 12 months of your first attempt.
Application timing and scheduling windows are covered separately in CURN Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
The Two-Axis Blueprint: The Fact Most Candidates Misread
CBUNA's official examination blueprint, adopted October 2017 and effective October 2018, lists eleven categories. Many candidates add all eleven percentages and panic that they total 200%. The explanation is simple: the eleven categories sit on two independent axes.
- Axis I, Patient Problems = Domains 1-6, totaling 100%
- Axis II, Nursing Activities = Domains 7-11, totaling 100%
Every single exam question is classified on both axes. A question about postoperative catheter care after prostatectomy, for example, belongs to a patient-problem category (genitourinary cancers) and a nursing-activity category (plan and implement care). Add all eleven percentages and you double-count the exam. The header count of 11 simply means eleven published categories across the two axes.
For a category-by-category deep dive, see CURN Exam Domains 2026: Complete Guide to All 11 Content Areas.
Axis I Cheat Sheet: Patient Problems
| Domain | Weight |
|---|---|
| 1. Pediatric anomalies, embryology and common pediatric neoplasms | 5% |
| 2. Urinary tract inflammations and disorders | 18% |
| 3. Voiding dysfunctions, including incontinence | 24% |
| 4. Obstructive uropathies and trauma, including stones and BPH | 25% |
| 5. Infertility and sexual dysfunctions, disorders of male genitalia | 5% |
| 6. Genitourinary cancers | 23% |
Domain 4: Obstructive Uropathies and Trauma (25%)
The single heaviest patient-problem category. It explicitly includes stones and BPH, so expect a steady diet of both.
- Stone management: how stone type and location drive intervention, and what the nurse monitors afterward
- BPH: symptom presentation, medical versus procedural management, and post-procedure catheter and irrigation care
- Urologic trauma: recognition, priorities and monitoring
- Signs of obstruction and deteriorating renal function that require escalation
Domain 3: Voiding Dysfunctions, Including Incontinence (24%)
Nearly a quarter of the exam. This is where everyday urologic nursing practice shows up most visibly.
- Differentiating types of incontinence and matching management to type
- Overactive bladder, retention and neurogenic bladder concepts
- Behavioral therapies, catheterization approaches and patient self-management
- Medication effects on bladder function
Domain 6: Genitourinary Cancers (23%)
Third-largest patient-problem category, and a frequent source of questions that blend clinical knowledge with teaching and care planning.
- Bladder, prostate, kidney and testicular cancers: presentation, staging concepts and treatment pathways
- Postoperative care for urinary diversions and ostomies
- Side effects of intravesical and systemic therapies
- Survivorship and sexual-health teaching
Domain 2 (urinary tract inflammations and disorders, 18%) covers the infection-and-inflammation space, including catheter-associated problems that urologic nurses see constantly. Domains 1 and 5 are only 5% each, so they deserve a lighter, efficient pass rather than deep study time.
Axis II Cheat Sheet: Nursing Activities
| Domain | Weight |
|---|---|
| 7. Assess and monitor patients who have urologic conditions and procedures/treatments | 25% |
| 8. Plan and implement care of patients who have urologic conditions and procedures/treatments | 30% |
| 9. Teach patients, significant others, other health professionals, and the public about prevention and management of urologic conditions | 25% |
| 10. Evaluate outcomes of care given to patients who have urologic conditions and procedures/treatments | 12% |
| 11. Ensure professional practice in promoting patient outcomes (consultation, staff development, quality improvement, research) | 8% |
Domain 8: Plan and Implement Care (30%)
The largest category on the entire blueprint. Expect scenario questions asking what the nurse should do first, next or most appropriately.
- Prioritizing interventions for catheter, irrigation, drain and diversion management
- Selecting the right intervention for a stated patient problem
- Coordinating care across the perioperative continuum
Domain 9: Teaching (25%)
Equal in weight to assessment. Teaching questions reward answers that are patient-centered, clear and appropriate to the learner's situation, and they cover prevention as well as management.
- Self-catheterization, pelvic floor and bladder retraining instruction
- Fluid, diet and medication teaching for stones, infections and incontinence
- Recognizing when a patient or caregiver has not understood and adapting the approach
Domain 11 is the smallest slice at 8%, but its content is distinctive: consultation, staff development, quality improvement and research. Candidates who skip it usually give up a handful of easy points.
Key Takeaway
Domains 8, 9 and 7 together account for 80% of Axis II. If you are short on time, master care planning, patient teaching and assessment before polishing evaluation and professional-practice content.
Pass Rate vs. Passing Standard
Do not confuse these two numbers. The passing standard is 70%, the score you need. The published 2024 pass rate was 68%, which describes how a past cohort performed.
That 68% is a rounded figure from 21 passes in 31 test administrations, involving 26 unique candidates, five of whom tested twice. With a cohort this small, a single candidate shifts the percentage noticeably, and the figure is a historical administration-based rate, not a forecast of your own result. Read the nuance in CURN Pass Rate 2026: What the Data Shows, and calibrate your expectations of difficulty with How Hard Is the CURN Exam? Complete Difficulty Guide 2026.
Certification Period and Renewal Rules
- Length: certification lasts three years and expires on December 31 of the renewal year.
- Baseline requirements: current licensure, current CBUNA certification, and 800 hours of urologic practice during the three-year certification period.
- Two renewal routes: reexamination, or 36 approved urology contact hours earned within the period, with no more than 10 of those hours in nephrology.
- Continuing-education renewal fee: USD 250 for members, USD 275 for nonmembers.
The 10-hour nephrology cap is the detail people miss. If you lean on nephrology-heavy conferences, you may find that only part of the hours count. Plan your contact hours across the full three years instead of cramming in the final months. The long-term value question is explored in Is the CURN Certification Worth It? Complete ROI Analysis 2026.
The Accreditation Caveat
This does not change the exam content, fees or eligibility described above. It is a status item to verify, not a reason to abandon your plans. If you are weighing employer expectations, see CURN Jobs and CURN Salary Guide 2026: Complete Earnings Analysis for the career side of the decision.
Sequencing Your Review by Weight
Because every question is classified on both axes, the efficient approach is to study conditions first, then layer the nursing activities on top. Here is a weight-driven sequence you can adapt to your own timeline.
Obstruction and Stones (Domain 4, 25%)
- BPH, stones and trauma, with post-procedure catheter and irrigation care
- Practice the assess, implement, teach, evaluate chain for each condition
Voiding Dysfunction (Domain 3, 24%)
- Incontinence types and matched management
- Retention, neurogenic bladder and catheterization strategies
GU Cancers (Domain 6, 23%)
- Treatment pathways, diversions and ostomy care
- Teaching scripts for side effects and survivorship
Infection/Inflammation, then the Small Domains (Domains 2, 1, 5)
- Urinary tract inflammations (18%) first
- Quick passes through pediatric anomalies and male genitalia/sexual dysfunction
Axis II Consolidation (Domains 7-11)
- Drill care planning and teaching scenarios
- Review evaluation and professional-practice content, then take timed mixed practice sets
Adjust the pace to your own clinical background. A nurse working daily in a urology clinic may compress Weeks 2 and 4; a nurse coming from a general floor may need extra time on pediatric and male genitalia content. A fuller approach is in the CURN Study Guide 2026: How to Pass on Your First Attempt, and you can pressure-test your recall with the CURN practice tests.
Frequently Asked Questions
The Certification Board for Urologic Nurses and Associates (CBUNA) issues the credential. SUNA hosts CBUNA's certification information but is a separate organization, and membership is optional. It simply reduces your fees.
There are 150 single-best-answer multiple-choice questions, including unscored pilot items, with a 3-hour limit. There is no guessing penalty, so answer every question.
Numerically, yes, but they are not meant to be added together. Domains 1-6 (Axis I, Patient Problems) total 100%, and Domains 7-11 (Axis II, Nursing Activities) total 100%. Each question is classified on both axes, so combining them double-counts the exam.
You need current licensure, current CBUNA certification and 800 hours of urologic practice in the certification period. Then you either retake the exam or earn 36 approved urology contact hours, with no more than 10 in nephrology. Certification expires December 31 of the renewal year.
No. The passing standard is 70%. The 68% figure is the 2024 administration-based pass rate (21 passes in 31 administrations involving 26 candidates). It describes a small past cohort and does not predict your individual result.
Keep this sheet handy, verify delivery and accreditation details against CBUNA's current pages, and then turn the facts into recall by working through timed questions on the CURN Exam Prep practice site.