- Why There Is No Published Passing Number
- How the NCT Exam Is Built and Scored
- 100 Scored Items and 50 Pretest Items
- Where the Points Actually Come From
- What to Master in Each Domain
- Exam-Day Mechanics That Protect Your Score
- Application, Fees, and the Authorization Window
- Sequencing Your Prep Around the Blueprint
- After You Pass: Seven Years and Recertification
- Frequently Asked Questions
- NMTCB sets the NCT passing criterion for each exam form; no fixed numeric cutoff was verified in its published materials.
- The exam has 150 four-option questions, but only 100 are scored; the other 50 are unscored pretest items.
- Procedures is about 50% of the blueprint, so it is the single biggest lever on your result.
- You get three hours, can flag and change answers, and must bring your own noiseless calculator.
Why There Is No Published Passing Number
Every candidate wants a clean answer to "what score do I need?" For the Nuclear Cardiology Technologist (NCT) examination from the Nuclear Medicine Technology Certification Board (NMTCB), the honest answer is that no numeric cutoff has been verified in the published sources. NMTCB determines the passing criterion for each examination form using the examination's content, how the individual items performed, and statistical review. You will not find a magic "you need 75%" figure from the issuer, and any website that quotes one without citing NMTCB deserves skepticism.
This guide is about the NCT credential specifically: the Nuclear Cardiology Technologist specialty examination offered by NMTCB. It is not the physician-level CBNC examination, and it is not the separate PET specialty exam. Everything below is built from what NMTCB has published about the NCT exam, and where a fact is not verified, we say so rather than guess.
How the NCT Exam Is Built and Scored
Understanding the construction of the test tells you more about "passing" than any rumor about a cutoff. The NCT exam is a closed-book, computer-based test delivered on demand at test centers by IQT, Inc. (Iso-Quality Testing). The format is straightforward:
- 150 multiple-choice questions, each with four answer options
- 100 scored items and 50 pretest items
- Three hours of testing time
- You must answer a question before advancing, but you can flag items, review them, and change answers
- Calculators are not supplied; you bring a noiseless, battery- or solar-powered calculator without text-storage capability
The exam content follows the NMTCB Nuclear Cardiology Examination Content Specifications, the NCT Content Outline 2023, effective October 1, 2023. NMTCB's current exam catalog still identifies this outline. A Summer 2026 job-task-analysis report discusses possible future revisions, but it is not a replacement blueprint, so the 2023 outline remains the governing document for what you are tested on.
Because the passing criterion comes from a combination of content, item performance, and statistical review, two candidates sitting different forms are held to a standard calibrated to their respective forms rather than to one universal raw number. For a candid look at how that translates into perceived difficulty, read How Hard Is the NCT Exam? Complete Difficulty Guide 2026.
100 Scored Items and 50 Pretest Items
One of the most useful facts for managing your nerves is that a third of the exam does not count. Of the 150 questions, 100 are scored and 50 are pretest items being evaluated for future use. Pretest items are not labeled, so you cannot tell which is which while testing.
What this means in practice
- A question that feels unfamiliar may be unscored. A strange item is not necessarily a sign that you are failing.
- Treat every question as if it counts. Since you cannot identify pretest items, there is no safe place to coast.
- Do not recalculate your standing mid-exam. Counting "how many I've missed" is meaningless when you cannot know which items are scored.
Key Takeaway
Do not spend precious minutes agonizing over one oddly worded question. With 50 pretest items mixed in unlabeled, flag the item, give your best answer, and keep moving. You have three hours for 150 questions, which is a workable pace if you do not stall.
Where the Points Actually Come From
NMTCB publishes five content domains with approximate weights. All five percentages are approximations, not exact item allocations, so treat them as guidance for where to invest study time rather than as a guaranteed count of questions per domain.
| Domain | Approximate Weight |
|---|---|
| Procedures: Indications, Instrumentation, Acquisition, and Processing | ~50% |
| Radiopharmaceuticals and Interventional Drugs: Properties, Indications, Contraindications, Dosages, Biodistribution, and Adverse Effects | ~15% |
| Non-Pharmacologic (Exercise) Stress Testing | ~15% |
| Anatomy/Physiology/Pathology | ~10% |
| Patient Care | ~10% |
The arithmetic of the blueprint is the real passing-score strategy. Procedures alone accounts for roughly half of the exam. Radiopharmaceuticals and exercise stress testing together add roughly another 30%. Anatomy/physiology/pathology and patient care round out the final 20%. A candidate who is excellent at procedures but neglects radiopharmaceutical dosing or exercise testing protocols leaves a large share of the exam to chance. For a deeper treatment of each area, see NCT Exam Domains 2026: Complete Guide to All 5 Content Areas.
What to Master in Each Domain
Since the passing criterion is not a single published number, your best defense is competence across the blueprint. Here is where to concentrate within each domain.
Domain 1: Procedures: Indications, Instrumentation, Acquisition, and Processing (~50%)
This is the heart of the exam and the largest source of scored items. Expect questions that test whether you can run a nuclear cardiology study correctly from start to finish.
- Appropriate indications for myocardial perfusion imaging and related studies
- Gamma camera and SPECT instrumentation, including quality control concepts
- Acquisition parameters, patient positioning, and gating
- Processing choices, reconstruction, and recognizing artifacts that can mimic or hide disease
- Protocol selection, such as rest/stress sequencing and imaging timing
Domain 3: Radiopharmaceuticals and Interventional Drugs (~15%)
The domain title itself is a study checklist: properties, indications, contraindications, dosages, biodistribution, and adverse effects.
- Properties and handling of the agents used in cardiac imaging
- Pharmacologic stress agents and other interventional drugs, including when each is indicated and when it is contraindicated
- Dosage considerations, which is where your calculator earns its place
- Expected biodistribution and recognizing adverse effects and how they are managed
Domain 4: Non-Pharmacologic (Exercise) Stress Testing (~15%)
Candidates sometimes under-prepare here because it feels like "cardiology" rather than "nuclear." The blueprint disagrees: it is worth roughly 15%.
- Exercise protocols and how they are applied
- Patient monitoring, including heart rate, blood pressure, and ECG responses
- Endpoints and criteria for terminating a test
- Timing of radiopharmaceutical injection relative to exercise
Domain 2: Anatomy/Physiology/Pathology (~10%)
The foundation that lets you interpret why a study is ordered and what an image pattern means.
- Cardiac anatomy, coronary distribution, and myocardial perfusion territories
- Cardiac physiology, including the relationship between workload, flow, and perfusion
- Common cardiac pathologies and how they present on imaging
Domain 5: Patient Care (~10%)
Smaller in weight, but these items are often very answerable if you have real clinical experience.
- Patient assessment, preparation, and education
- Safety, radiation precautions, and communication
- Recognizing and responding to patient changes during studies
For a consolidated one-page refresher on these areas, our NCT Cheat Sheet 2026: One-Page Review of Must-Know Facts is a good last-week companion.
Exam-Day Mechanics That Protect Your Score
Candidates lose points to logistics more often than they expect. Several rules from NMTCB's published exam information shape how you should behave on test day.
The calculator rule
Calculators are not supplied. You must bring a noiseless, battery- or solar-powered calculator that cannot store text. Dosage and decay-style questions in the radiopharmaceutical domain can involve multi-step arithmetic, and showing up without an approved calculator is an avoidable disaster. Practice with the exact calculator you plan to bring.
The forced-answer, flag-and-review rhythm
You must answer each question before moving on, but you may flag it, return later, and change your answer. That design suggests a simple rhythm:
- Read the stem fully, then commit to your best answer so the screen advances.
- Flag anything you are less than confident about.
- Use remaining time on flagged items, starting with ones where a calculation or a careful re-read could change the outcome.
Application, Fees, and the Authorization Window
Passing begins before you ever see a question: you have to qualify and apply. NMTCB requires active NMTCB, ARRT(N), or CAMRT nuclear-medicine certification, plus at least 700 documented nuclear-cardiology clinical hours as a certified or registered technologist. That experience covers radiopharmaceutical handling, imaging, and injections where permitted, under the qualifying physician or direct certified-technologist supervision specified by NMTCB. Employers verify the experience. Our guide to NCT Requirements 2026: Eligibility, Prerequisites & How to Qualify walks through documentation in detail.
| Item | Detail |
|---|---|
| Standard application/exam fee | $225, nonrefundable |
| February 2026 promotional fee | $150 promotion, now expired |
| PET + NCT combination application | $350; allows completing eligibility requirements and both distinct exams within three calendar years of application |
| Testing format | On-demand, closed-book, computer-based at test centers via IQT, Inc. |
| Authorization window | Normally about six months |
Two practical points follow from the fee structure. First, because the $225 fee is nonrefundable and the testing window is normally about six months, you should apply when your preparation is on a realistic path to completion rather than as a motivational gesture. Second, the combination pathway is a convenience for candidates pursuing both specialties; it does not merge the exams or change what the NCT exam covers. For a complete cost picture, see NCT Certification Cost 2026: Complete Pricing Breakdown, and for timing, NCT Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Sequencing Your Prep Around the Blueprint
Since you cannot study to a published cutoff, study to the weights. One plan that follows the blueprint rather than generic advice: anchor the largest domain early and often, and interleave the smaller domains so nothing goes stale.
Procedures foundation
- Work through indications, protocols, instrumentation, and processing step by step
- Build a running list of artifacts and how to recognize them
- Because this domain is roughly half the exam, revisit it weekly for the rest of your prep
Radiopharmaceuticals and exercise stress testing
- Study agents, dosing, contraindications, biodistribution, and adverse effects
- Cover exercise protocols, monitoring, and termination criteria
- Practice dosage arithmetic with your actual exam-day calculator
Anatomy/physiology/pathology and patient care
- Review coronary territories and common pathologies
- Tighten patient preparation, safety, and communication topics
- Run a timed mixed-domain session in the 150-question, three-hour format
If you want a fuller week-by-week framework, our NCT Study Guide 2026: How to Pass on Your First Attempt expands on this, and you can pressure-test your recall with the NCT practice tests on the main site. Timed, domain-mixed practice is especially valuable here because the real exam intermixes topics rather than grouping them. Note that NMTCB does not publish, produce, or recommend particular commercial study guides, and independent practice questions, including ours, are preparation content rather than official exam items.
When practice scores are uneven, let the blueprint guide triage: a weak result in Procedures costs you more than the same weakness in Patient Care. You can also use the full practice question bank to find which of the five domains is dragging your overall performance.
After You Pass: Seven Years and Recertification
Meeting the passing criterion earns a credential that lasts seven years, with annual registration and maintenance of an active underlying nuclear-medicine credential throughout. When the cycle ends, you can recertify either by examination or by documenting 42 NCT-specific continuing education hours earned during the seven-year cycle. The CE recertification application fee is $250. An expired specialty credential requires re-examination rather than the CE route.
One detail trips people up: the 24 CE credits awarded for passing a specialty exam are distinct from the 42-hour NCT CE recertification pathway. They are not the same pool, so do not assume the exam credits count toward the 42 hours. There is no separate NCT biennial CE requirement, but your primary-certification requirements still apply.
Whether the credential pays off for you depends on your setting and goals. Our analyses in Is the NCT Certification Worth It? Complete ROI Analysis 2026 and the NCT Salary Guide 2026: Complete Earnings Analysis explore that question, and the NCT jobs overview covers where nuclear cardiology technologists work.
Frequently Asked Questions
NMTCB sets the passing criterion for each examination form using content, item performance, and statistical review. No numeric cutoff was verified in the cited published sources, so there is no single percentage to memorize. The dependable approach is to build competence across all five blueprint domains.
The exam has 150 four-option multiple-choice questions. Of those, 100 are scored and 50 are pretest items. Pretest items are not identified, so you should answer every question as though it counts.
Yes. You must answer a question before advancing, but you can flag items, review them later, and change your answers. The three-hour time limit applies to the whole session, so reserve time for reviewing flagged questions.
Procedures: Indications, Instrumentation, Acquisition, and Processing is the largest at approximately 50%. Radiopharmaceuticals and Interventional Drugs and Non-Pharmacologic (Exercise) Stress Testing are each about 15%, while Anatomy/Physiology/Pathology and Patient Care are each about 10%. All of these percentages are approximate.
Bring a noiseless, battery- or solar-powered calculator without text-storage capability, because calculators are not supplied. The standard application and exam fee is $225 and is nonrefundable; the $150 February 2026 promotion has expired. A PET + NCT combination application costs $350 and does not combine the two exams.
Because the passing standard is set per form rather than published as a flat number, the most useful way to think about "exactly what you need to pass" is this: command the Procedures domain, respect the roughly 15% weights on radiopharmaceuticals and exercise stress testing, and do not neglect the final 20% in anatomy/physiology/pathology and patient care. Pair that with a firm grasp of exam-day mechanics, and you have done everything within your control.