- What a CURN Actually Is
- Who Issues the Credential
- Who Qualifies to Sit for It
- What the Exam Looks Like
- The Two-Axis Blueprint Explained
- Axis I: The Clinical Content You Must Master
- Axis II: What the Exam Expects You to Do
- Fees, Application, and Delivery
- Passing Standard vs. Historical Pass Rate
- An Accreditation Caveat Worth Knowing
- Where CURNs Work
- Sequencing Your Prep Around the Blueprint
- Keeping the Credential Active
- Frequently Asked Questions
- CURN stands for Certified Urologic Registered Nurse, awarded by the Certification Board for Urologic Nurses and Associates (CBUNA).
- The exam has 150 single-best-answer questions, a 3-hour limit, no guessing penalty, and a 70% passing standard.
- Eligibility requires two years of RN experience and at least 800 urologic patient-care hours within the preceding three years.
- Obstructive uropathies and trauma (25%) and care planning and implementation (30%) are the heaviest categories on their axes.
What a CURN Actually Is
A CURN is a Certified Urologic Registered Nurse: a registered nurse who has met defined experience requirements in urologic patient care and passed a standardized certification examination in the specialty. The credential signals focused competence in caring for patients with disorders of the kidneys, bladder, ureters, urethra, and male reproductive system, along with the nursing activities that surround that care: assessment, planning, teaching, outcome evaluation, and professional practice.
If you have seen the acronym elsewhere and wondered whether it refers to something different, this article concerns one credential only: the urologic nursing certification for registered nurses. For shorter explainers on the terminology, see our pages on what CURN stands for and CURN meaning; for the full credential overview, see CURN certification.
Unlike a general medical-surgical certification, the CURN is narrow by design. Every question is rooted in urology: voiding dysfunction, stones, benign prostatic hyperplasia, genitourinary cancers, catheter care, urinary tract infection, pediatric anomalies, and more. That narrowness is the point. It tells employers and patients that you have depth in a specialty where nuanced assessment and patient teaching matter enormously.
Who Issues the Credential
The CURN is issued 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 SUNA and CBUNA are separate organizations. This distinction matters in practice in one place: SUNA membership is optional for certification, though members pay lower fees.
Always treat the issuer's own pages as the source of truth for applications, scheduling, and delivery instructions. CBUNA's current notices identify CMS as the testing agency and describe fully remote examinations following application review. Some older materials, including the March 2025 handbook, legacy C-NET/PSI pages, and certain recertification wording, still describe testing-center instructions. If you find conflicting delivery details while researching, defer to the current application and scheduling instructions from the issuer.
Who Qualifies to Sit for It
For U.S. candidates, eligibility has four components:
- Completion of a nationally accredited nursing program
- Two years of experience as a registered nurse
- 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
The 800-hour requirement is the one candidates most often underestimate. It must be clinical urologic patient care, and it must fall within the three years before you apply. A nurse who spent years in urology but moved to a different unit more than three years ago may not qualify without recent hours. Nurses in mixed units, such as a surgical floor with heavy urology volume, should document their urologic hours carefully.
International applicants need the specified approved nursing education and practice experience plus first-level general nursing registration. The examination is administered in English, and CBUNA may review transcripts. For a complete walkthrough of prerequisites, see our guide to CURN requirements and how to qualify.
What the Exam Looks Like
The CURN examination consists of 150 single-best-answer multiple-choice questions delivered within a 3-hour limit. Some of those 150 items are unscored pilot questions used to evaluate future exam content; you will not know which ones they are, so treat every question as if it counts. There is no penalty for guessing, which means leaving an item blank is never the right strategy.
Single-best-answer format matters. Several options may be partially correct, and your task is to identify the most appropriate response. In urology, that often means choosing the safest, most patient-centered, or most guideline-consistent action: for example, which intervention takes priority for a patient with a blocked catheter and suprapubic discomfort, or which teaching point matters most for a patient starting intermittent catheterization.
The passing standard is 70%, established using the Angoff procedure, a method in which subject-matter experts judge how a minimally competent candidate would perform on each item. In other words, the cut score reflects a defined competence standard, not a curve against other test-takers. For more detail on scoring, read our explainer on the CURN passing score.
The Two-Axis Blueprint Explained
The most commonly misunderstood feature of the CURN is its blueprint. CBUNA's official blueprint, adopted October 2017 and effective October 2018, lists 11 categories, but they do not add up to a single 100% pie. Instead, the blueprint has two axes, and every exam question is classified on both:
- Axis I, Patient Problems: Domains 1 through 6
- Axis II, Nursing Activities: Domains 7 through 11
Each axis independently totals 100%. A single question might be classified as a Domain 4 item (obstructive uropathies) on Axis I and a Domain 9 item (patient teaching) on Axis II. Adding all 11 percentages together would double-count the exam, so do not do that when planning your study time.
| Axis | Domains | Largest Category |
|---|---|---|
| Axis I: Patient Problems | 1-6 | Obstructive uropathies and trauma (25%) |
| Axis II: Nursing Activities | 7-11 | Plan and implement care (30%) |
The practical implication: you need both clinical knowledge and nursing-process fluency. A candidate who memorizes stone management but cannot reason through assessment, teaching, and outcome evaluation will struggle, and vice versa. For a deeper look at each category, see our complete guide to the CURN exam domains.
Axis I: The Clinical Content You Must Master
Domain 4: Obstructive uropathies and trauma, including stones and BPH (25%)
The largest patient-problem category. Expect questions that ask you to recognize obstruction, prioritize interventions, and anticipate complications.
- Urolithiasis: presentation, pain management, hydration, and preventive teaching
- BPH: symptoms, medical and procedural management, postoperative care
- Urethral stricture and ureteral obstruction
- Genitourinary trauma: recognition and nursing priorities
Domain 3: Voiding dysfunctions, including incontinence (24%)
Nearly a quarter of the exam, and a signature area of urologic nursing.
- Types of incontinence and how assessment distinguishes them
- Neurogenic bladder and retention
- Catheterization approaches, including intermittent catheterization teaching
- Behavioral, pharmacologic, and procedural management options
Domain 6: Genitourinary cancers (23%)
Bladder, prostate, kidney, and testicular cancers sit here, along with the nursing care that follows diagnosis and treatment.
- Presentation and staging concepts at a nursing-relevant level
- Treatment modalities and their side effects, including intravesical therapy
- Urinary diversion and ostomy care
- Surveillance, survivorship, and patient education
Domain 2: Urinary tract inflammations and disorders (18%)
Infection and inflammation, including recurrent and catheter-associated problems.
- Cystitis, pyelonephritis, prostatitis, and urethritis
- Catheter-associated infection prevention
- Interstitial cystitis and related bladder pain conditions
Domains 1 and 5: Pediatric anomalies and male reproductive disorders (5% each)
Small slices, but easy points if you prepare. Domain 1 covers pediatric anomalies, embryology, and common pediatric neoplasms; Domain 5 covers infertility, sexual dysfunction, and disorders of the male genitalia.
Notice how the weights concentrate your effort. Domains 3, 4, and 6 together account for a large share of the patient-problem axis, with Domain 2 close behind. Domains 1 and 5 combined are only a tenth of Axis I, so allocate time accordingly without ignoring them entirely.
Axis II: What the Exam Expects You to Do
Axis II is where many experienced nurses assume they will cruise, and where careless reading can cost points. These categories describe the nursing process applied to urologic care:
- Domain 8, plan and implement care (30%): the largest category on either axis. Think prioritization, catheter management, postoperative care, bladder irrigation, and coordinating treatment plans.
- Domain 7, assess and monitor (25%): interpreting urine output, bladder scan findings, pain, hematuria, and signs of complication after procedures.
- Domain 9, teach patients, families, other professionals, and the public (25%): self-catheterization, fluid and dietary guidance, medication teaching, pelvic floor education, and prevention messaging.
- Domain 10, evaluate outcomes of care (12%): deciding whether interventions worked and what to adjust.
- Domain 11, ensure professional practice (8%): consultation, staff development, quality improvement, and research.
Fees, Application, and Delivery
The initial examination fee depends on SUNA membership status:
| Fee Type | SUNA Member | Nonmember |
|---|---|---|
| Initial exam | USD 325 | USD 420 |
| One discounted retake within 12 months | USD 225 | USD 320 |
| Continuing-education renewal | USD 250 | USD 275 |
Membership is optional, so do the arithmetic against the membership dues you would pay. The savings on the exam fee alone are USD 95, and renewal by continuing education saves another USD 25 for members. Whether that justifies joining depends on whether you value the society's other offerings. Our CURN certification cost breakdown walks through the full pricing picture.
The process starts with an application to CBUNA, which reviews your eligibility. After the application is approved, you schedule the exam according to the issuer's current delivery instructions. Because timing and testing windows can change, check the issuer's pages and our guide to CURN exam dates and scheduling before planning around a specific month.
Passing Standard vs. Historical Pass Rate
Candidates frequently conflate two different numbers. The passing standard is 70%, the score you need on the exam. The pass rate is the share of candidates who passed in a historical cohort. They are not the same thing.
CBUNA's published 2024 statistics report a 68% administration-based pass rate, rounded from 21 passes in 31 test administrations. Those 31 administrations involved 26 unique candidates, because five candidates tested twice. That is a small cohort, so one or two results shift the percentage noticeably. It also describes a past group, not your odds. Preparation, clinical background, and test-day performance determine your result, not the cohort average.
For context on how to interpret these figures, see what the pass rate data shows and our assessment of how hard the CURN exam really is.
An Accreditation Caveat Worth Knowing
In the interest of transparency: CBUNA's FAQ reports that the CURN program's accreditation from the Accreditation Board for Specialty Nursing Certification (ABSNC) lapsed in 2025, with reinstatement in progress as of March 2026. We were not able to verify any subsequent reinstatement, and ABSNC's current directory lists the sister CUNP program but not the CURN. CBUNA continues to accept CURN examination applications.
What does this mean for you? Accreditation status can matter to some employers, magnet-recognition programs, or clinical-ladder policies that specify accredited certifications. Before you invest, check with your employer or manager whether the CURN counts toward your unit's certification incentives, and check the issuer's FAQ for the latest status. Our analysis of whether the certification is worth it addresses how to weigh this alongside other factors.
Where CURNs Work
Urologic nurses work wherever patients with genitourinary conditions are diagnosed, treated, and followed. Common settings include:
- Urology clinics and private practices, including office-based procedures and cystoscopy
- Hospital urology and surgical units, including postoperative and inpatient consult care
- Ambulatory surgery and procedure centers
- Continence and pelvic health clinics
- Oncology programs treating bladder, prostate, and kidney cancers
- Dialysis and nephrology-adjacent settings
- Long-term care and home health, where catheter management and incontinence care are daily realities
Certification is generally most valued in specialty clinics and hospital programs that want demonstrable expertise in catheter care, continence, and oncology follow-up. Exploring current openings is a useful reality check; see our overview of CURN jobs and the CURN salary guide for what to ask about compensation and differentials.
Sequencing Your Prep Around the Blueprint
Rather than reading urology front to back, let the blueprint weights guide the order. One logical way to allocate a multi-week plan:
Obstruction and voiding (Domains 4 and 3)
- Stones, BPH, strictures, trauma, and all incontinence types
- Catheter types, indications, and complication management
- These two domains carry the most weight on Axis I, so start where the points are
Cancers (Domain 6)
- Bladder, prostate, kidney, and testicular cancers
- Intravesical therapy, urinary diversions, and ostomy care
Inflammation, pediatrics, and male reproductive topics (Domains 2, 1, 5)
- UTI variants and catheter-associated infection
- Pediatric anomalies and embryology
- Infertility and sexual dysfunction
Axis II integration (Domains 7-11)
- Practice questions that blend clinical content with assessment, teaching, and evaluation
- Review professional practice and quality-improvement concepts
- Timed sets of 150 questions to rehearse the 3-hour pacing
Because every question carries a classification on both axes, doing practice questions throughout, not just at the end, helps you see how clinical content and nursing activities intertwine. For a fuller plan, see our CURN study guide, keep the CURN cheat sheet handy for last-week review, and test yourself with the CURN practice questions on the main site.
Key Takeaway
Pace yourself at roughly one minute per question and use the full 3 hours. With no guessing penalty, answer everything, flag uncertain items, and return to them if time remains.
Keeping the Credential Active
Certification lasts three years and expires on December 31 of the renewal year. To recertify, you need current licensure and current CBUNA certification, 800 hours of urologic practice during the three-year certification period, and one of two pathways:
- Reexamination: sit for the exam again
- Continuing education: earn 36 approved urology contact hours during the period, with no more than 10 of those hours in nephrology
The continuing-education route costs USD 250 for SUNA members or USD 275 for nonmembers. Start logging approved hours early rather than scrambling in the final year, and keep documentation of your practice hours. Full details are on the issuer's recertification pages.
Frequently Asked Questions
CURN stands for Certified Urologic Registered Nurse. It is awarded by the Certification Board for Urologic Nurses and Associates (CBUNA) to registered nurses who meet urologic experience requirements and pass the certification exam.
The exam has 150 single-best-answer multiple-choice questions, including unscored pilot items, with a 3-hour time limit. There is no penalty for guessing, so answer every question.
The passing standard is 70%, set using the Angoff procedure. This is separate from the historical pass rate; the published 2024 administration-based rate of 68% describes a small past cohort and does not predict an individual result.
U.S. applicants need a nationally accredited nursing program, two years of RN experience, at least 800 clinical urologic patient-care hours within the preceding three years, and a current active unrestricted RN license in the United States or its territories.
No. The blueprint has two axes: Domains 1-6 (Patient Problems) and Domains 7-11 (Nursing Activities). Each axis independently totals 100%, and every question is classified on both, so adding all 11 percentages would double-count the exam.
Becoming a CURN is a focused investment in a specialty where hands-on expertise in continence, catheter care, stones, and genitourinary oncology is genuinely valued. Understand the two-axis blueprint, confirm your eligibility hours, verify current delivery and accreditation details with the issuer, and build your prep around the heavily weighted domains. When you are ready to start practicing, head to the CURN Exam Prep practice test site, and for a quick refresher on terminology, see what CURN certification is.