The Abdomen (AB) examination is ARDMS’s specialty examination for the RDMS credential in abdomen sonography: approximately 165 questions in three hours — multiple-choice and hotspot questions answered directly on images — scored on a 300-to-700 point scale where 555 or better passes, and one half of a two-examination credential: you must also pass the Sonography Principles and Instrumentation (SPI) examination, in either order, within five years of the AB, to earn the RDMS credential with the Abdomen specialty. PassProfessor’s RDMS Abdomen program is in the works, built to ARDMS’s published examination content.
This program is part of the expanding PassProfessor catalog — join the notify list and we’ll email you when enrollment opens.
An abdominal sonographer’s day is a tour of the upper abdomen — liver, gallbladder and biliary tree, pancreas, spleen, kidneys, the great vessels — and the AB examination is built in the image of that day: organ by organ, pathology by pathology, with the physics of the image never far from the diagnosis it produces. PassProfessor’s RDMS Abdomen program is in the works as part of the expanding PassProfessor catalog, built on the content ARDMS publishes for the AB examination — abdominal anatomy, perfusion and function, pathology, vascular abnormalities, trauma, postoperative anatomy, abdominal physics, and clinical care and practice — and organized so your preparation follows the examination’s own map of the abdomen.
Which examination is this?
This page covers one examination only: the Abdomen (AB) specialty examination administered by the American Registry for Diagnostic Medical Sonography (ARDMS), a qualifying examination for the Registered Diagnostic Medical Sonographer (RDMS) credential with the Abdomen specialty. It is not the SPI examination — the Sonography Principles and Instrumentation examination is the separate physics prerequisite that every RDMS specialty shares, and it has its own PassProfessor program — and passing the AB alone does not make you an RDMS: the credential is earned when both examinations are passed within five years of each other. It is also distinct from ARRT’s Sonography credential and from the other ARDMS specialties (OB/GYN, Breast, and the rest), each of which has its own specialty examination. Keeping the two-examination structure straight matters, because candidates plan badly when they treat the AB as the whole credential: the SPI’s five-year clock and the AB’s run on the same calendar.
What will the program cover?
Original practice questions, written to ARDMS’s published content. The program is being built from scratch against the content ARDMS publishes for the AB examination — the anatomy, function, pathology, vascular, trauma, postoperative, physics, and clinical-practice content named in the examination’s own overview — so practice follows the examination’s real map of abdominal sonography. No practice item is an actual examination item, a recalled item, or another provider’s material, and no item asks you to recite a code, section number, or citation: knowledge and image interpretation are tested, citations never are.
Image-first practice, including the hotspot discipline. The real examination asks some of its questions as hotspot items: a question about an image, answered by marking directly on the image itself. That format tests a different skill from text-based recall — locating the structure, the lesion, the vessel, precisely — and the program’s design includes image-anchored practice that trains exactly that: find it on the image, then decide what it means.
Results you can read by content area. Practice is organized by the examination’s content areas, so your results can be read area by area: a thin area — vascular abnormalities, say, or postoperative anatomy — shows while there is still time to repair it, instead of hiding inside an overall score.
Timed practice at the real sitting’s shape. The real examination gives you three hours for approximately 165 questions, including a five-minute survey. The program’s design includes sustained timed practice modelled on that shape, so pacing — a little over a minute per question, with images to read — is trained alongside knowledge.
What are the verified facts of the real exam?
| Fact of record | Detail |
|---|---|
| Credential | Registered Diagnostic Medical Sonographer (RDMS) with the Abdomen specialty, from the American Registry for Diagnostic Medical Sonography (ARDMS) |
| Two-examination structure | The AB examination and the Sonography Principles and Instrumentation (SPI) examination must both be passed within five years of each other, in either order |
| Format | Approximately 165 questions in 3 hours (including a five-minute survey): multiple-choice questions and hotspot questions, answered by marking directly on individual images |
| Scoring | Pass or fail against a point scale of 300 to 700; a score of 555 or better passes. The scale is not a percentage and is not curve-based |
| Results | A score report is issued at the test center on completion; results are also posted to your Inteleos portal within one week |
| Content | Basic abdominal anatomy; perfusion and function; pathology; vascular abnormalities; trauma; postoperative anatomy; abdominal physics; clinical care and practice |
| Eligibility | You must meet one of ARDMS’s published prerequisite pathways (education and clinical sonography experience) before ARDMS accepts your application |
| Examination fee | $300, as ARDMS publishes it. Confirm the current fee when you apply |
| Retakes | You may reapply three days after an unsuccessful attempt, but must wait 60 days before retaking the examination |
| Applications | Open year-round; the examination is administered at Pearson VUE test centers |
How does the practice map to the examination?
ARDMS describes the AB examination’s content as the knowledge, skills, and abilities every abdominal sonography professional needs. The practice program is organized on the same content map:
| Content area | What it carries |
|---|---|
| Abdominal anatomy | The normal anatomy of the abdomen’s organs, soft tissues, and vessels — the reference every abnormal finding is measured against |
| Perfusion and function | How the abdominal organs and vasculature work: blood supply, drainage, and organ function as the image displays them |
| Pathology | The diseases of the abdominal organs — what they look like sonographically and how they are distinguished from one another |
| Vascular abnormalities | The pathology of the abdominal vasculature: the aorta, the inferior vena cava, the portal system, and the visceral vessels |
| Trauma | The sonographic assessment of the traumatized abdomen |
| Postoperative anatomy | The abdomen after surgery: resections, reconstructions, transplants, and the appearances that follow them |
| Abdominal physics | The physics and instrumentation of abdominal imaging as applied to the abdomen’s examinations |
| Clinical care and practice | Patient care, examination protocols, and professional practice in abdominal sonography |
What does the anatomy, perfusion, and function content cover?
The foundation third of the examination’s world: the normal abdomen, completely known. Organ by organ — liver, biliary system, pancreas, spleen, kidneys and urinary tract, gastrointestinal tract, peritoneal spaces — and vessel by vessel through the aorta, inferior vena cava, portal venous system, and visceral branches. Perfusion and function add the dynamic layer: how blood reaches and leaves each organ, and what normal function looks like on an image. This content is tested for a reason candidates underestimate: pathology questions are unanswerable at speed unless the normal image is so familiar that the abnormal one announces itself.
In abdominal sonography, normal is a diagnosis you make hundreds of times a day. The examination tests whether yours is reliable.
What does the pathology and vascular content cover?
The diagnostic core: the diseases of each abdominal organ as ultrasound displays them — their appearances, their distinguishing features, and the findings that separate look-alike conditions — together with the vascular abnormalities of the abdominal circulation: aneurysm, thrombosis, occlusion, portal hypertension and its consequences, and the Doppler signatures that confirm them. These areas reward differential discipline: not “what is this?” but “what else could this be, and which finding rules it out?”
Every pathology item is a differential in disguise. Study each condition beside the two conditions it is most often confused with.
What do trauma and postoperative anatomy cover?
The abdomen under disruption. Trauma content covers the sonographic role in the injured patient — free fluid, organ injury, the focused assessment — and postoperative anatomy covers the abdomen surgery leaves behind: resected and reconstructed anatomy, anastomoses, fluid collections, and transplant appearances. Both areas share a demand the routine content does not: the anatomy is altered, sometimes radically, so the candidate must reason from what the surgery did rather than match a memorized picture.
What do abdominal physics and clinical care cover?
Physics, in this examination, is applied: the principles of ultrasound imaging as they operate on abdominal examinations — resolution, artifacts, Doppler — close enough to the probe that the AB assumes the SPI’s foundation and builds on it in the abdomen’s specific conditions. Clinical care and practice covers the professional frame: patient care during abdominal examinations, protocol selection and examination completeness, correlation with the clinical picture and other findings, and the standards of practice ARDMS expects. Candidates who treat these as soft content misjudge them; they are the areas where an otherwise strong imager donates questions.
How is the AB examination scored?
ARDMS scores the examination on a point scale from 300 to 700, and a score of 555 or better passes. Two properties of that scale matter for preparation. It is not a percentage: 555 is not 79% of anything, and there is no published conversion from questions-correct to points. And it is not curve-based: your result does not depend on how other candidates performed in your window — the standard is fixed against the content. You receive a score report at the test center when you finish, so there is no waiting period of uncertainty, and the report is also posted to your Inteleos portal within a week. The practical reading: because the scale gives you a number rather than a bare pass/fail, a near miss is genuinely informative — but the five-year SPI window keeps running regardless, so a retake plan should be made against both the score report and the calendar.
Who can take this exam, and what does it certify?
Before ARDMS will accept an AB application, you must satisfy one of the prerequisite pathways ARDMS publishes — combinations of sonography education and clinical sonography experience, of which the most direct is graduation from a CAAHEP-accredited sonography program, with other pathways for candidates arriving through related credentials, degrees with clinical experience, and other routes ARDMS enumerates. Read the current prerequisite document before you apply; the pathway details are specific, and eligibility errors cost application fees. Applications are open year-round, and the examination is delivered at Pearson VUE centers. Passing the AB and the SPI within five years of each other earns the RDMS credential with the Abdomen specialty — the credential employers name for abdominal sonography positions — which you then maintain under ARDMS’s renewal and continuing education requirements.
What makes this test demanding?
Three features. First, the image load: a substantial share of the examination is read off images, including hotspot items that require you to place a mark on the correct structure — knowledge that is merely verbal, untested against actual images, runs out quickly. Second, the breadth within one body region: the abdomen is a region, but the examination treats it as a world — eight content areas from vascular physics to postoperative anatomy in a single three-hour sitting. Third, the paired-examination structure: the AB is only half the credential, and candidates who sequence badly — AB passed with an SPI result about to age out of the five-year window — can turn a pass into a problem. Plan the pair as one project with two sittings.
An honest note on format
PassProfessor practice questions are written items and image-anchored items in the examination’s spirit; the real examination’s hotspot questions are answered by marking directly on the image at the test center, and no practice environment reproduces that interface exactly. ARDMS does not release its examination questions, and no provider can offer them. Practice here builds the knowledge and image interpretation the content requires; practice results are a study gauge — a way to see which content areas are thin while there is time to repair them — not a prediction of a scaled score.
How should you use this page while the program is in the works?
- Join the notify list today. Enrollment is not open yet, and the notify list is how you hear the moment it is. While you wait, read the exam guide — it walks the two-examination structure, prerequisites, content areas, scoring, and study planning in full.
- Check your five-year window now. If you have already passed the SPI, your AB deadline is set by that date; if you have not, decide the order deliberately and study for the pair as one project.
- Study from ARDMS’s published content now. The content areas summarized on this page are the syllabus; organizing your reading and your scanning review by them is useful work today, before any practice program opens.
- When the program opens, survey every area first. Early practice should touch all eight content areas, so your first picture of yourself is honest — then drill the areas that cost you, and finish with full timed sittings.
Frequently asked questions
How many questions are on the ARDMS Abdomen exam? Approximately 165 questions in three hours, including a five-minute survey — multiple-choice questions plus hotspot questions answered by marking directly on images.
What score passes the AB exam? A score of 555 or better on ARDMS’s 300-to-700 point scale, as ARDMS publishes it. The scale is not a percentage and is not curve-based.
Do I need the SPI exam as well? Yes. The RDMS credential with the Abdomen specialty requires passing both the AB specialty examination and the Sonography Principles and Instrumentation (SPI) examination within five years of each other, in either order.
What does the AB exam cost? ARDMS publishes an examination fee of $300. Confirm the current fee when you apply. That is ARDMS’s examination fee, separate from any preparation program.
Who is eligible to apply for the AB exam? Candidates who meet one of the prerequisite pathways ARDMS publishes — education and clinical sonography experience combinations, most directly graduation from a CAAHEP-accredited sonography program. Check the current ARDMS prerequisite document for the pathway that fits you.
When do I get my results? You receive a score report at the test center when you complete the examination, and results are posted to your Inteleos portal within one week.
What happens if I do not pass? You may reapply after three days, but you must wait 60 days before retaking the examination. Remember that the five-year window pairing your AB with your SPI result keeps running.
What is a hotspot question? An advanced item type in which the question is about an individual image and you answer by marking directly on the image — locating the structure or finding the question asks about.
Is the AB the same as ARDMS’s other specialty exams? No. Each RDMS specialty — Abdomen, OB/GYN, Breast, and others — has its own specialty examination. This program covers the Abdomen examination only; the SPI is shared across specialties.
Are these the real exam questions? No. Every question in the program is an original PassProfessor practice question written to the content ARDMS publishes for the examination. ARDMS does not release its examination questions, and no provider can offer them.
When will enrollment open? The program is in the works. Join the notify list on this page and we will email you when enrollment opens.
Disclaimer
PassProfessor is an independent exam-preparation provider; this program is not endorsed by, affiliated with, or sponsored by the American Registry for Diagnostic Medical Sonography (ARDMS), Inteleos, or Pearson VUE. ARDMS, RDMS, and SPI are marks of the ARDMS. This program is examination preparation only: the details on this page are drawn from the official sources recorded in the companion guide and are current as of November 2026; ARDMS’s official publications govern if anything here differs from them. The credential is awarded by ARDMS alone when its requirements are complete; this program confers no credential.