OB-1T Exam Domains 2026: Complete Guide to All 5 Content Areas

How the Blueprint Works

The POCUS Obstetrics/First Trimester certification from the Point-of-Care Ultrasound Certification Academy, part of Inteleos, is built on a one-page content outline that lists five weighted objectives. Those objectives govern the Clinical Case Assessment, the case-based half of the credential. The weights total 100% for that assessment only. They do not describe the entire two-component credential, because a separate Peer Evaluation of your practical scanning abilities must also be passed.

That distinction trips up many candidates. The five domain lines are official weighted assessment objectives, not preparation-curriculum headings. They tell you what the scored cases are designed to measure, not how a course should be sequenced. If you are new to the credential itself, start with What Is OB-1T Certification? for scope, and note that "OB-1T" is a retained site identifier rather than an awarded post-nominal.

The outline is a current program-linked PDF with no printed revision date or examination version, so treat it as the best available public statement of scope and check the issuer's page before you test. For a broader orientation, see our OB-1T Study Guide 2026: How to Pass on Your First Attempt.

Domain Weights at a Glance

Two domains carry 66% of the assessment. A candidate who has memorized pathology lists but cannot interpret an ambiguous image or commit to a diagnostic conclusion is studying the smallest-weighted material and neglecting the largest. Our How Hard Is the OB-1T Exam? Complete Difficulty Guide 2026 explains why interpretation, not recall, is where candidates feel the pressure.

Domain 1: Standard POCUS Views (7%)

This is the smallest of the skill-based domains, but it underpins everything else. If you cannot recognize whether a clip shows an adequate sagittal or transverse uterine view, the later domains collapse. Remember that the credential expects a combination of transvaginal and transabdominal scanning experience within your 25 attested cases, so you should be comfortable reading images produced by either approach.

Because this domain is only 7%, do not over-invest. Treat it as the foundation you refresh early, then fold view recognition into the case-style practice that dominates the later domains.

Domain 2: Anatomical Features (23%)

At 23%, anatomy is the second-smallest scored block of substance, yet it is where many missed questions originate. Hotspot items may ask you to click directly on a structure in an image, which rewards genuine spatial recognition over memorized definitions.

Practice labeling structures on unlabeled images rather than rereading diagrams. If you can place a click on the correct structure in under a few seconds, hotspot questions become far less stressful. Our OB-1T Cheat Sheet 2026: One-Page Review of Must-Know Facts collects the anatomical anchors worth keeping at hand.

Domain 3: Sonographic Findings (30%)

Sonographic Findings is the third-largest domain and the first where description becomes the skill. The question here is not "what is the diagnosis" but "what do you see." Precise, neutral description is what makes the next domain possible.

A useful discipline is to write a one-sentence findings statement for every practice image before you decide what it means. That habit separates observation from interpretation, which is exactly the boundary between Domain 3 and Domain 4. Note that M-Mode and Measurement also appear among the Peer Evaluation criteria, so building these skills pays off twice.

Domain 4: Diagnostic Findings (36%)

This is the largest domain at 36%, and it is where the credential distinguishes clinicians who can scan from clinicians who can decide. Cases here ask you to integrate the images with a clinical picture and reach a defensible conclusion.

The possible-versus-definitive distinction

The issuer's published examples list "possible pregnancy failure" and "definitive pregnancy failure" as separate categories, and you should keep them separate in your own reasoning. A finding that raises concern but does not meet the threshold for certainty is not the same as a finding that establishes failure. Questions can hinge on whether a scenario supports calling it definitive or only possible, so learn the criteria your training uses for each and apply them consistently.

Likewise, complete and incomplete pregnancy loss are separate from those two failure categories. Do not collapse "incomplete abortion" into "definitive pregnancy failure" because both describe a pregnancy that will not continue. The assessment treats them as different answers to different questions.

Domain 5: OB/First Trimester Pathologies (4%)

Despite carrying only 4% of the Clinical Case Assessment, this domain names the conditions you must be able to recognize. Its small weight means a few questions at most, but pathology knowledge also feeds Domains 3 and 4, so it is never wasted effort.

The published pathology examples are:

• Complete abortion
• Definitive pregnancy failure
• Early pregnancy
• Ectopic pregnancy
• Heterotopic pregnancy
• Incomplete abortion
• Single and multiple intrauterine gestation
• Molar pregnancy
• Ovarian torsion
• Possible pregnancy failure

These examples are non-exhaustive, so do not treat the list as a closed set. Build a one-line recognition pattern for each, then drill the confusable pairs: complete versus incomplete abortion, possible versus definitive failure, and ectopic versus heterotopic pregnancy. Ovarian torsion is the entry that surprises candidates who think of this credential purely as a pregnancy-location exam, so make sure you can recognize an enlarged, abnormal-appearing ovary in context.

The Peer Evaluation Is Not a Sixth Domain

It is easy to mistake the Peer Evaluation criteria for extra content areas. They are not. The Peer Evaluation is a separate assessment of practical abilities, scored on 7 evenly weighted criteria, and it does not increase the five-domain count.

Both components must be passed. You provide at least 2 healthcare-provider peer evaluators with an ultrasound clinical background who know your relevant scanning abilities, and the first 2 completed peer questionnaires determine the peer result. Choose evaluators who have actually watched you scan, because a vague endorsement from someone unfamiliar with your technique does not serve you. Details on eligibility live in OB-1T Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Scheduling Your Prep Around the Weights

You have up to 90 days from purchase to complete both components, and the online assessment can be stopped and resumed. Use that window deliberately. Because the weights are lopsided, an equal split of study time across the five domains is inefficient. Here is one way to front-load the foundation and spend the most time where the points are.

This sequence puts the largest domain after you have built the descriptive vocabulary it depends on, which is the logic of the week ordering. Adjust the pacing to your actual availability; the 90-day window is an access and completion limit, not a required course length. For a fuller plan, see the OB-1T Study Guide 2026, and use the practice test site to rehearse interpretation under timed, case-style conditions.

Format and Logistics That Shape Your Prep

What the case format asks of you

The Clinical Case Assessment consists of 7 simulated clinical cases. That is a case count, not a question count; each scenario contains multiple-choice and interactive image-hotspot questions. A fixed total question count, a numeric passing mark, and a credential-specific pass rate were not verified in the public sources reviewed, so treat any figure you see quoted elsewhere with caution. Our OB-1T Passing Score 2026 and OB-1T Pass Rate 2026: What the Data Shows articles explain what is and is not publicly known.

Eligibility and fees that affect timing

To apply, you attest to performing and participating in the interpretation of at least 25 obstetrics/first-trimester POCUS cases in the preceding 2 years, using a combination of transvaginal and transabdominal scanning. POCUS Fundamentals is required unless waived through a qualifying SPI examination passed within 5 years or a current qualifying ARDMS or APCA credential. The standard clinical certification fee is USD 150, with reductions available for eligible countries. When Fundamentals must also be purchased, it adds USD 125, bringing combined initial issuer fees to USD 275, excluding optional courses. See OB-1T Certification Cost 2026: Complete Pricing Breakdown for the full picture.

Retakes and renewal

Content-specific assessments allow 2 total attempts before a 1-year waiting period, with a 30-day wait after an unsuccessful attempt. A retake requires an application and fee, and the fee amount was not verified. Apply within 90 days of failure; any component you initially passed is retained for the first retake application. This is one more reason to know which half you are weaker on. Renewal every 5 years requires an active-practice and good-standing attestation, the relevant knowledge check, and USD 50.

One caveat worth knowing: POCUS Fundamentals does not expire, but policy requires you to earn your first content-specific certificate within 3 years of Fundamentals or reapply for Fundamentals. That is a progression restriction, not a 3-year expiry of the Fundamentals credential itself.

Frequently Asked Questions

Mastering the five domains means weighting your effort toward interpretation, practicing description before diagnosis, and preparing separately for the bedside skills your peer evaluators will judge. When you are ready to test your case reasoning, try the practice questions at OB-1T Exam Prep.