PET Exam Dates 2026: Testing Windows, Deadlines & Scheduling

How PET Exam Scheduling Actually Works

Candidates searching for PET exam dates often expect a short list of fixed sitting days, the way some professional exams publish two or three windows per year. The Positron Emission Tomography (PET) specialty examination from the Nuclear Medicine Technology Certification Board (NMTCB) does not work that way. It is offered on demand through computer-based test-center delivery, with IQT, Inc./Iso-Quality Testing handling the testing side.

That distinction changes how you plan. Instead of circling a calendar date months ahead and working backward, you move through a sequence: confirm eligibility, submit the application and fee, receive approval, and then book a seat within your eligibility period. The deadline that matters most is the one attached to your own approval, not a date printed on a national calendar.

This article walks through that sequence, what each stage means for timing, and how to pick a testing date that matches your preparation. If you are still deciding whether the credential fits your career, start with What Is PET Certification? and the broader PET Certification overview.

Why There Is No Fixed 2026 Calendar to Memorize

Because delivery is on demand, there is no single list of "2026 testing windows" that applies to every candidate. Any third-party page that presents a tidy table of PET exam dates for the year should be treated with caution. The only authoritative logistics source is the NMTCB's own PET Exam Information page, which describes the delivery method and the rules that govern your window.

What you can plan around is the structure of the process rather than a calendar:

• Application first. You cannot book a seat until your application is submitted and your eligibility is approved.
• Six-month eligibility. After approval, you have six months to test. That period, not the calendar year, is your real deadline.
• Seat availability. Test-center capacity varies by location and season, so booking earlier within your window gives you more choice.

Eligibility Comes Before Any Date

You cannot choose a testing date until the NMTCB approves your eligibility, and eligibility for this specialty is more demanding than many candidates expect. It is a PET-only specialty credential, so it is separate from entry-level CNMT certification, from the NMTCB(CT) credential, and from the PET/NCT combination. The pathway you qualify under determines how long your paperwork takes, which in turn determines how early you can realistically test.

Route one: nuclear medicine credential holders

This route requires an active CNMT, ARRT(N), or CAMRT(RTNM) credential, plus 700 qualifying clinical PET hours.

Route two: radiography and radiation therapy credential holders

This route requires an active ARRT(R/T) or CAMRT(RT/RTT) credential and an additional CT or MRI credential. The experience requirements are heavier:

• 1,000 qualifying clinical PET hours
• 100 documented clinical competencies
• 70 didactic hours: 20 in procedures, 20 in instrumentation, 10 in radiation protection, and 20 in radiopharmacy

The 100 competencies break down into 50 imaging cases, plus ten each in daily scanner QC, dose-calibrator QC, radiation surveys/meter QC, radioactive-package handling, and radiopharmaceutical preparation.

Qualifying clinical and didactic work is subject to five-year recency conditions and requires supervisor or employer verification. Route-two candidates in particular should start gathering sign-offs early, because waiting on a supervisor signature is one of the most common sources of delay. For the full breakdown, see PET Requirements: Eligibility, Prerequisites & How to Qualify.

Application, Fee, and the Six-Month Window

The application carries a nonrefundable application/examination processing fee of $225. Because the fee cannot be recovered, it makes sense to submit only when you are genuinely close to ready, since the clock on your six-month eligibility starts running once you are approved.

That six-month period creates a practical trade-off:

1. Apply too early and you may burn part of your window before you have finished studying.
2. Apply too late and you may be rushed, with fewer seat options near your preferred test center.

For a full accounting of what the credential costs beyond the processing fee, including annual registration and recertification, see PET Certification Cost: Complete Pricing Breakdown.

What the Test-Day Format Means for Your Date

Your choice of date should reflect how demanding the sitting is. The exam consists of 225 four-option multiple-choice questions: 200 scored items and 25 pretest items, with three hours 45 minutes allowed. You answer each question before advancing, but you can mark, review, and change answers, so the final stretch of the session is usable review time.

A few format details have scheduling implications:

• Length. At nearly four hours, this is a stamina exercise. Avoid booking it at the end of a long shift or immediately after an overnight.
• Pretest items. Twenty-five of the 225 questions are unscored pretest items, and you cannot tell which ones they are, so treat every question as if it counts.
• Closed book. You may bring an allowed noiseless battery or solar calculator with no text-storage capability. No calculator is supplied.

A note on conflicting information: some third-party prep sites have reported a shorter exam of 150 questions and three hours. Do not plan around those figures. The current NMTCB specification is 225 questions and three hours 45 minutes, and that is the format to prepare for.

For a sense of how demanding the content is relative to the format, read How Hard Is the PET Exam? Complete Difficulty Guide. For how scoring is determined, see PET Passing Score: Exactly What You Need to Pass. The passing standard is set for each exam form by the examination committee, drawing on content, item statistics, and form difficulty, so there is no single universal raw percentage to chase.

Choosing a Date Around Your Weakest Domain

The most useful way to pick a testing date is to work out how long it will take you to bring your weakest content area up to standard. The exam draws on four official content areas with approximate weights, and the outline allocates a specific number of scored questions to each.

These weights come from the NMTCB's content outline and describe how the exam is built, not how you should divide your study time. Your background should drive your plan. A technologist who works daily on the scanner but rarely handles tracer preparation will need a different runway than one who prepares doses routinely but seldom troubleshoots image quality.

For a deeper look at each area, see PET Exam Domains: Complete Guide to All 4 Content Areas.

A Domain-Based Planning Timeline

Once you are approved and your six-month window is running, structure your remaining time around the domains rather than around generic study habits. The sequence below suits a candidate who is approved and has about three months before the target sitting. Adjust the weeks to your own window and strengths, and see the PET Study Guide: How to Pass on Your First Attempt for a fuller method.

Working through realistic questions throughout this stretch is far more useful than rereading notes. You can build that habit with the PET practice tests as you move through each phase.

Admission, ID, and Calculator Rules

Date planning is not complete until you have handled the logistics that can turn a scheduled seat into a missed one. Admission and matching identification requirements apply, which means the name on your identification must match the name on your registration. Confirm this well before test day, not in the parking lot.

Practical points to settle in advance:

• Identification. Make sure your accepted ID matches your registration exactly.
• Calculator. Bring an allowed noiseless battery or solar calculator without text-storage capability. None is supplied at the center.
• Closed book. Plan for no reference materials during the sitting.
• Test-center travel. Check the location and allow time to arrive early, since you cannot make up a late start.

After You Pass: Renewal Dates That Matter

Scheduling does not end when you pass. The credential carries its own ongoing dates, and missing them can jeopardize a certification you worked hard to earn.

• Underlying credential. You must keep your required active underlying credential in good standing. Its continuing education obligations are separate from the PET specialty's.
• Annual registration. Registration is required each year.
• Seven-year recertification cycle. PET specialty recertification runs on a seven-year cycle, completed either by re-examination or by earning 42 PET-specific CE hours across that cycle, along with the required application and payment.

If you plan to use the 42-hour CE option, track your PET-specific hours as you go rather than scrambling near the end of the cycle. The NMTCB Continuing Competence Policy is the authoritative source for what counts. For context on the career value of keeping the credential current, see Is the PET Certification Worth It? Complete ROI Analysis, and for job-market context, PET Jobs.

Frequently Asked Questions

Choosing your date well comes down to treating the six-month eligibility window as the real deadline and sequencing your preparation by domain. When you are ready to test your readiness against realistic questions, the PET Exam Prep practice site is built around the exam's actual format and content areas.