- Why There's No Public BIET Pass Rate - And What That Means
- The 75% Threshold: The Real Number That Matters
- Exam Format: What Actually Happens on Test Day
- The 18 Domains Where Candidates Actually Lose Points
- What Happens If You Don't Pass
- Standalone vs. Journeyman: Two Roads, Same Exam
- Fees and Logistics That Quietly Affect Outcomes
- A Domain-Weighted Study Timeline
- Who's Actually Hiring BIET-Certified Techs
- Frequently Asked Questions
- ETA International does not publish an official BIET pass rate, so the passing score (75%) is your real benchmark.
- The exam has no hands-on component - it's fully written, so knowledge recall and terminology precision decide outcomes.
- One free retake is available within one year of a failed attempt, though remote proctoring fees still apply.
- Film Processing remains one of the 18 tested categories, even though many labs have gone fully digital.
Why There's No Public BIET Pass Rate - And What That Means
If you've searched for a hard percentage on how many candidates pass the Biomedical Imaging Equipment Technician (BIET) exam on their first try, you've likely come up empty. ETA International, the certifying body behind BIET, does not publish aggregate pass/fail statistics for this credential. That's a meaningful data point in itself: without a published number, guessing at a pass rate - or worse, borrowing a figure from an unrelated "BIET" credential offered by a different organization - will only mislead your preparation.
Instead of chasing a number that doesn't exist, the smarter approach is to study the mechanics ETA does disclose: the passing score, the exam format, the domain structure, and the retake policy. Together, these tell you far more about your realistic odds than a single statistic ever could.
The 75% Threshold: The Real Number That Matters
ETA sets the passing score for the BIET exam at 75%. There is no hands-on or practical examination component - the entire assessment is written, covering all 18 competency categories drawn from the current competency outline (carrying a 2019 copyright). That means your score depends entirely on how well you recall and apply knowledge across a wide spread of biomedical imaging topics, not on demonstrated bench skills.
For a full breakdown of exactly what 75% means in terms of raw questions and how ETA structures scoring, see our dedicated BIET Passing Score guide. The short version: because the exam blends anatomy, electronics, imaging modalities, and regulatory content into one sitting, a weak spot in even one or two domains can be enough to pull your composite score below the line.
Key Takeaway
Treat 75% as a floor, not a target. Aim to be comfortably above it in every domain rather than relying on strong domains to offset weak ones.
Exam Format: What Actually Happens on Test Day
Understanding the delivery format matters because it shapes how you should rehearse. Candidates can sit for the BIET exam in two ways:
- In-person testing: Administered via Trapeza or traditional paper/pencil format, proctored by an ETA Certification Administrator at an approved test site.
- Remote testing: Delivered through ExamRoom.AI, which requires registration through ETA and adds a US$16 fee for this two-hour exam.
Regardless of format, you'll need a valid photo ID. Scratch paper and a non-programmable scientific calculator are permitted during the exam, but any used scratch paper must be returned to the proctor before you leave - a small but easy-to-forget procedural detail. Because the exam is fully written with no lab station or equipment demonstration, your preparation should emphasize precise recall of terminology, circuit and system logic, and regulatory specifics rather than physical troubleshooting drills alone.
The 18 Domains Where Candidates Actually Lose Points
The competency outline behind the BIET exam spans 18 categories. Candidates coming from a pure electronics or IT background often underestimate the clinical and anatomical content, while those with a clinical background underestimate the depth of electro-mechanical and imaging-system content. Here's where preparation commonly breaks down:
Domain 1: Anatomy & Domain 2: Medical Terminology
These foundational domains trip up candidates who assume the exam is "all electronics." You need working fluency in anatomical structures and clinical terminology as they relate to imaging equipment function and positioning.
- Know terminology tied to imaging modalities, not just isolated vocabulary lists
Domain 9: Film Processing
Even as departments shift to digital workflows, Film Processing remains part of the current outline. Candidates who skip it because "nobody uses film anymore" leave points on the table.
- Study chemical processing steps and processor maintenance basics even if your facility is fully digital
Domains 11-13: MRI, CT, Nuclear Medicine
These major-modality domains carry dense technical content - magnet safety, gantry systems, detector technology - that requires more repetition than a single pass through notes.
- Build separate review sessions for each modality rather than grouping them together
Domains 16-18: Radiation Safety, Radiation Physics, Linear Accelerators
This cluster is often the most unfamiliar territory for technicians without radiation therapy exposure, and it benefits from dedicated, unhurried study time.
- Don't leave this cluster for the final days before your exam date
For a category-by-category walkthrough of all 18 areas - including Computer, PACS, Building Wiring, Test Equipment, Troubleshooting, and Codes and Regulations - see the full BIET Exam Domains Guide. Mapping your personal weak spots against that full list before you schedule an exam date is one of the most reliable ways to gauge readiness.
What Happens If You Don't Pass
ETA's retake policy is straightforward but worth knowing in detail before you sit for the exam. If your first attempt is unsuccessful, you're entitled to one free retake within one year of that first session. However, if you test remotely, the ExamRoom.AI proctoring fee is not waived on the retake - you'll still pay that additional cost even though the exam itself is free the second time.
This policy has a practical implication for scheduling: if you're on the fence about whether you're ready, testing sooner rather than later can make sense, since a near-miss still gives you a full year and a no-cost second shot at the core exam fee. Just budget for the remote proctoring surcharge if that's your testing method.
Key Takeaway
A failed attempt isn't catastrophic financially - the exam fee itself is covered on retake - but remote proctoring costs still apply, so factor that into your budget either way.
Standalone vs. Journeyman: Two Roads, Same Exam
How you approach BIET pass readiness partly depends on which pathway you're using to get there. ETA offers BIET as either a standalone certification or as a specialty under the Journeyman CET pathway, and the prerequisites differ meaningfully.
| Pathway | Prerequisite | Experience Guidance | Notes |
|---|---|---|---|
| Standalone BIET | None - no foundational electronics certification required | Not mandated | Fastest entry point for candidates focused solely on imaging equipment |
| Journeyman CET Specialty | CETa or all five Electronics Modules (EM1-EM5) | At least two years recommended | Builds broader electronics foundation alongside BIET content |
| Standalone-to-Journeyman Upgrade | Earn CETa after already holding standalone BIET | At least two years combined training/experience | US$55 upgrade fee applies |
Neither pathway changes the content of the BIET written exam itself - the 75% passing score and 18-domain outline are the same either way. What changes is your foundation going in. Candidates arriving via the Journeyman route with CETa or EM1-5 completed often find the electronics-heavy domains (Building Wiring, Test Equipment, Electro/Mechanical Safety) more familiar territory, while standalone candidates may need to build that base independently. Full prerequisite details live in our BIET Requirements guide.
Fees and Logistics That Quietly Affect Outcomes
Cost mechanics don't just affect your wallet - they affect testing decisions that influence pass likelihood. The base exam fee is US$80, plus US$16 if you test remotely through ExamRoom.AI, making remote testing a two-hour, higher-total-cost option compared to in-person testing via Trapeza or paper/pencil with an ETA Certification Administrator.
Once certified, the credential is valid for a four-year term. Maintaining it requires submitting a maintenance form along with either 10 related continuing-education hours per year (40 total over four years) or supervisor-completed employer verification, plus US$25 per year (US$100 over the four-year term). ETA recommends annual submission rather than waiting until the term's end - a detail that matters for anyone thinking about the exam as a long-term investment rather than a one-time test.
For the complete fee breakdown across registration, testing method, and maintenance, see our BIET Certification Cost guide. Knowing these numbers ahead of time prevents surprises and lets you plan your testing date around budget, not just study readiness.
A Domain-Weighted Study Timeline
Generic study techniques like spaced repetition and timed review blocks only help if they're pointed at the right material. Given that BIET spans 18 distinct domains in a single written exam with no hands-on component, the highest-leverage move is sequencing your review so weaker or less-familiar domains get more total exposure before test day.
Foundational Domains
- Anatomy, Medical Terminology, Computer, PACS
- Build vocabulary flashcards for terms that overlap clinical and technical usage
Electro-Mechanical Core
- Electro/Mechanical Safety, Building Wiring, Test Equipment, Troubleshooting
- Focus extra repetition here if you entered via the standalone pathway without EM1-5
Major Imaging Modalities
- Basic Radiographic Equipment, Film Processing, Diagnostic Ultrasound, MRI, CT
- Review each modality separately rather than blending them into one session
Radiation & Regulatory Cluster
- Nuclear Medicine, Radiation Safety, Radiation Physics, Linear Accelerators, Codes and Regulations
- Do a full mixed-domain practice run in the final week under timed conditions
This isn't a generic template - it's ordered so the domains most candidates rate as least familiar (radiation physics, linear accelerators) get dedicated late-stage attention rather than being rushed at the end. For a more granular week-by-week plan tied to specific resources, our BIET Study Guide walks through preparation in more detail, and running full-length practice sessions on our practice test platform can help you confirm which domains still need work before you commit to an exam date.
Who's Actually Hiring BIET-Certified Techs
BIET certification signals to employers that a technician can service and maintain diagnostic imaging equipment across modalities - X-ray, ultrasound, CT, MRI, and nuclear medicine systems - rather than specializing narrowly in one machine type. Hospitals, imaging centers, and third-party biomedical equipment service companies typically look for this breadth when staffing imaging service departments.
Because the exam content spans everything from PACS and networking to radiation safety and codes/regulations, the credential also appeals to employers who need technicians comfortable moving between IT-adjacent tasks (network troubleshooting, PACS support) and traditional hands-on repair. If you're evaluating whether the credential translates into concrete job opportunities in your market, our BIET Jobs overview and ROI analysis go deeper into how employers value the certification relative to experience alone.
Frequently Asked Questions
No. ETA does not release aggregate pass/fail statistics for the BIET exam. The most reliable benchmark available is the documented 75% passing score, not a rumored percentage.
No. The BIET exam has no hands-on examination. It is entirely written, covering all 18 competency categories in a single testing session.
You're entitled to one free retake within one year of your first session. If you test remotely via ExamRoom.AI, the proctoring fee still applies on the retake even though the base exam fee is waived.
No. The standalone BIET pathway does not require a foundational electronics certification. That prerequisite (CETa or Electronics Modules EM1-5) applies specifically to the Journeyman CET specialty pathway.
The certification term is four years. Maintenance requires submitting a maintenance form, completing 10 related continuing-education hours per year (or employer verification), and paying US$25 annually, with ETA recommending yearly rather than end-of-term submission.