How Many Questions Are on the CEN Exam and How Long Is It? (2026 Guide)

The short answer: 175 items, 3 hours

The CEN sits you down in front of 175 items and gives you 3 hours (180 minutes) to work through them. Of those items, 150 scored items count toward whether you pass. The other 25 unscored pretest items are BCEN trying out new questions on live candidates — they're scattered through the exam, they're unmarked, and they have zero effect on your result.

There's one more wrinkle worth knowing before you sit down: BCEN presents 5 practice/tutorial questions before the exam proper begins. Those are there so you can get used to how the software works — clicking, flagging, moving between items. They aren't counted, and the exam timer starts when the exam begins, not during that walkthrough.

So the honest framing is this: you're being judged on 150 questions, you'll see 175, and you cannot tell which is which. Answer every item as if it counts.

CEN exam at a glance

Element	Detail
Total items presented	175 items
Scored items	150 scored items
Unscored pretest items	25 unscored pretest items
Pre-exam tutorial	5 practice/tutorial questions (not counted)
Time limit	3 hours (180 minutes)
Delivery	Computer-based via PSI Exams — at a PSI test center or via Live Remote Proctoring
Scheduling	Schedule with PSI within a 90-day test window after eligibility is granted
Fee	$285 for Emergency Nurses Association (ENA) members; $380 for non-members
Retakes	Unlimited attempts; 90-day wait after a failed attempt

What the 25 unscored items actually do to you

Nothing, mechanically. Psychologically, they can do plenty.

Pretest items are frequently the odd ones — the question about a presentation you've seen twice in a decade, or the stem written in a style that feels slightly off from everything around it. Candidates walk out convinced they bombed because they fixated on six or seven items that felt unfair. Some of those were probably pretest items being tried out for a future form.

The practical habit: when a question feels bizarre, give it your best clinical reasoning, flag it if you want, and move. Don't let it colonize the next twenty items. That single behavior change is worth more than another content review pass for a lot of experienced ED nurses. We've written more about that pattern in our breakdown of common mistakes candidates make on the CEN.

Pacing across 3 hours

The CEN is not a speed test for most working emergency nurses. The item count and the 3 hours are matched so that a prepared candidate who reads carefully and commits to an answer finishes with room to spare. The people who run out of time are almost always the ones re-reading the same three stems, second-guessing a defensible answer, and hunting for the trick.

A workable rhythm

• First read the last line. Find out what's actually being asked — priority action, most likely cause, next intervention — before you process the whole vignette.
• Answer, then flag. Never leave an item blank as a "come back later." Put down your best option first, then flag it. If the clock gets away from you, you still have a scored answer sitting there.
• Check your position against the clock at fixed points. Roughly a quarter of the way through, then halfway. If you're behind, tighten up immediately rather than sprinting at the end.
• Cap your review. Change an answer only when you can articulate the specific reason — a detail you misread, not a vague feeling.

If you're testing through Live Remote Proctoring, build in extra buffer before the appointment for the room scan and system check. That's not exam time, but a rushed, stressful setup bleeds into the first stretch of questions. Our CEN test day tips go through the setup in more detail.

How the 150 scored items translate into pass or fail

BCEN publishes a raw standard: you must answer 99 of 150 scored items correctly to pass — which BCEN describes as equivalent to 66%. The score is not curved. Your result depends on your own performance, not on how the rest of the candidates did that month.

That cut score comes from a criterion-referenced standard-setting procedure: panels of nurse experts representing each specialty practice area nationwide make judgments about item difficulty, with the assistance of BCEN's test development vendor PSI Exams, and the final passing score is approved by the BCEN Board of Directors. The standard is reviewed and can change every few years, tied to the CEN Role Delineation Study.

That last point matters right now, because the Examination Content Outline changed. Confirm the current cut against BCEN's own FAQ before you build a study target around a specific number, and read our fuller write-up on the CEN passing score.

What your score report tells you

Pass or fail. That's it. At a test center you're handed the report before you leave; with Live Remote Proctoring the result appears on-screen immediately. A score report is also emailed to you either way.

The July 2026 content outline change — and why per-domain item counts need checking

A new CEN Examination Content Outline took effect July 6, 2026, superseding the previous outline. The exam is organized into 11 weighted content domains across the 150 scored items:

• Cardiovascular Emergencies
• Respiratory Emergencies
• Neurological Emergencies
• Gastrointestinal Emergencies
• Genitourinary, Gynecology, and Obstetrical Emergencies
• Medical Emergencies (includes substance use/abuse)
• Mental Health Emergencies
• Head, Eye, Ear, Nose, Throat Emergencies (formerly Maxillofacial/Ocular)
• Wound Emergencies
• Environment and Toxicology Emergencies, and Communicable Diseases
• Professional Issues (Prioritization; Legal and Ethical)

Notable structural changes: Gastrointestinal was split out from Genitourinary/GYN/OB, Maxillofacial/Ocular was renamed Head, Eye, Ear, Nose, Throat, and Professional Issues was reorganized into Prioritization (triage, mass casualty, patient throughput) and Legal/Ethical. Pull the per-domain item counts straight from the official outline PDF rather than from secondhand summaries — including ours. The domain names and the 11-domain structure are solid; the individual counts should be verified at the source. Our CEN content outline breakdown walks through what shifted.

What happens if the 150 don't go your way

Attempts are unlimited, but there's a mandatory 90-day waiting period after a failed attempt. You submit a retest application online through your BCEN account once that period is up; the retest eligibility date shows on your account dashboard. BCEN offers a discounted retest fee for retest applications submitted up to one year after the initial exam, and with the optional BCEN Test Assurance program the second-attempt retest application carries no fee. Dollar figures move, so confirm them on BCEN's cost page.

Use the wait. Ninety days is enough time to work through weak domains properly instead of re-reading everything at the same shallow depth. There's a plan for exactly that in what to do if you don't pass.

A note on pass rates

BCEN maintains an official Certification Exam Statistics page reporting exams passed and total certificants for its programs, including the CEN. A specific CEN first-time or overall pass-rate percentage wasn't retrievable from official pages during our research, so we won't quote one. If you need a rate, pull the current figure directly from BCEN's Certification Exam Statistics page.

Before you schedule

Eligibility is a current, unrestricted Registered Nurse (RN) license in the United States, a US Territory, Canada, or Australia — or an equivalent RN license. Any active restriction, suspension, probation, or order from a nursing licensure authority disqualifies you. There's no minimum experience requirement, though BCEN recommends practicing in the specialty for at least 2 years, which is sound advice: the exam rewards pattern recognition you build at the bedside.

Once your application is approved, BCEN emails your eligibility with a 90-day test window and instructions for booking with PSI. Paying online processes immediately and lets you schedule the same day. Don't sit on the window — book early, then move the appointment if you need to. The registration steps are laid out in our CEN registration walkthrough.