- What "RC" Means on This Site
- Who Issues the Credential
- Registry vs. Board Certification
- Exam Format and Scoring Standard
- The Seven Weighted Domains
- Eligibility and the Points System
- Fees, Application, and Retests
- Who Hires Registry-Certified Investigators
- Keeping the Credential Active
- Sequencing Your Preparation
- Frequently Asked Questions
- RC here means Registry Certification (basic) from the American Board of Medicolegal Death Investigators (ABMDI), not any other credential sharing the acronym.
- The exam has 240 multiple-choice questions: 230 graded, ten unscored pilot items, four hours, live virtual proctoring.
- Seven weighted domains apply; Forensic and Medical Knowledge is the largest at 20%.
- Each section carries its own criterion-referenced passing standard, so one strong domain cannot rescue a weak one.
What "RC" Means on This Site
"RC" is a short label used across this site for Registry Certification (basic), the entry-level credential tier offered by the American Board of Medicolegal Death Investigators. The acronym is shared by several unrelated credentials in other fields, so it is worth being explicit: nothing here concerns any of those. If you are searching for the credential held by coroner's office and medical examiner investigators who respond to death scenes, you are in the right place.
One caveat matters up front. "RC" is the abbreviation this site uses; it is not an official exam code issued by ABMDI. The certifying body refers to the credential as Registry Certification, and the designations you will actually see after a name are the Associate (A-ABMDI) and Diplomate (D-ABMDI) credentials. If you want other angles on the terminology, our explainers on what RC stands for and RC meaning cover the naming in more detail.
Who Issues the Credential
The American Board of Medicolegal Death Investigators (ABMDI) is the certifying organization. It defines the exam objectives, sets eligibility rules, administers testing, and enforces maintenance requirements. Its governing document is the Policy and Procedure Manual (June 2024, revision 24.5.31), and Appendix C of that manual contains the official blueprint for the Registry examination. A separate document, the Registry Certification Application Process (revision 24.6.1), walks through application steps, proctoring, and retests.
The competency foundation for the field is ABMDI's Fundamental Tasks of Medicolegal Death Investigation. Note that the PDF carries a 2024 filename but prints revision 23.8.24 inside, so cite the printed revision if you reference it. Candidates must have a trainer verify their competency in these Fundamental Tasks as part of the application, which means the document is both a study resource and an application requirement.
Registry Certification vs. Board Certification
ABMDI offers two broad tiers, and confusing them is a common mistake. The Registry tier is the foundational credential and has two designations. The advanced tier is Board Certification, which leads to Fellow status (F-ABMDI) and involves a different assessment structure. This site's coverage is limited to the Registry tier; the advanced practical and case examination is a separate process and is not part of what you will face for Registry Certification.
| Designation | Tier | Key Distinction |
|---|---|---|
| Associate (A-ABMDI) | Registry (basic) | Covers the corresponding no-scene or limited-scene experience route |
| Diplomate (D-ABMDI) | Registry (basic) | Requires documented scene experience |
| Fellow (F-ABMDI) | Board Certification (advanced) | Separate advanced pathway, outside this article's scope |
For a deeper look at the requirements side, see our guide to RC requirements and how to qualify.
Exam Format and Scoring Standard
The Registry examination is a multiple-choice test of 240 questions. Of those, 230 are graded and ten are unscored pilot questions used to evaluate future items. You will not know which are which, so treat every question as live. You have four hours, and the exam is delivered with live virtual proctoring through MonitorEDU, meaning you test remotely under observation rather than at a traditional testing center.
Why There Is No Single Passing Percentage
Candidates often ask for "the" passing score, but ABMDI does not publish one advertised raw percentage. Instead, each section must meet its own criterion-referenced passing standard, established using a modified Angoff standard-setting method. In practice, that means subject-matter experts judge how a minimally competent investigator would perform on each section's items, and those judgments determine the cut point for that section.
Key Takeaway
Because every section is judged on its own standard, a strong result in one domain does not offset a weak one. Plan to be competent in all seven areas rather than spiking in your favorites. Our RC passing score breakdown explains this in more depth.
The Seven Weighted Domains
The blueprint in Appendix C of the Policy and Procedure Manual lists seven weighted headings. This seven-section structure took effect January 1, 2024 and replaces older eight-section descriptions you may still find in outdated study materials. If a resource refers to eight content areas, it is likely out of date. For a full walkthrough, read our complete guide to all 7 content areas.
Domain 7: Forensic and Medical Knowledge (20%)
The heaviest domain. Expect the medical and forensic underpinnings of death investigation: understanding what you observe and why it matters to cause and manner of death.
- Anatomy, physiology, and common disease processes relevant to sudden death
- Injury patterns and mechanisms of trauma
- Postmortem changes and what they indicate
- Terminology you must read and use accurately in reports
Domain 3: Scene Response and Documentation (18%)
How an investigator arrives, secures information, and records what is found at a death scene.
- Scene safety and initial assessment
- Preserving and documenting evidence and the scene itself
- Photography, sketching, and written documentation standards
- Coordination with other responders on scene
Domain 4: Body Assessment and Documentation (18%)
Equal in weight to scene work, this domain focuses on the decedent.
- Systematic external examination of the body
- Recording identifying features, injuries, and medical interventions
- Documenting condition and position accurately
- Handling and transport considerations that protect evidence
Domain 5: Completing the Investigation (14%)
Bringing a case to a defensible conclusion.
- Gathering medical and social history
- Identification and notification processes
- Report writing and case file completeness
- Supporting the determination of cause and manner of death
Domains 1, 2, and 6 (10% Each)
Three smaller domains that are easy to underestimate.
- Interagency Communication: working with law enforcement, medical examiners, hospitals, and other agencies
- Communication with Families: sensitive, accurate notification and information gathering
- Additional Medicolegal Death Investigator Duties: responsibilities that fall outside the core scene-to-report workflow
Together, the two scene-and-body domains and Forensic and Medical Knowledge account for 56% of the exam, but since every section has its own passing standard, the three 10% domains can still sink an otherwise strong attempt.
Eligibility and the Points System
Eligibility is built around points, not a flat number of hours. The baseline requirements are:
- Minimum age of 18
- High school graduation or equivalent
- Current qualifying medicolegal-investigation employment
- 640 eligibility points accumulated within five years, including at least 384 employment points
- A professional reference
- Employer verification
- Trainer-verified attestation of competency in the Fundamental Tasks
The Associate versus Diplomate question largely comes down to scene experience. If your role involves little or no scene response, the Associate route is designed for you; if you have the documented scene experience, the Diplomate route applies. For a wider look at prerequisites, see RC requirements for 2026.
Fees, Application, and Retests
| Item | Amount / Rule |
|---|---|
| Application fee | $50 |
| Examination fee (includes proctoring) | $400 |
| Failed-section retests | Up to two retests per failed section |
| Retest spacing | At least 30 days between testing dates |
| Testing window | Within the 12-month application/testing window |
A few mechanics deserve emphasis. Retests are section-specific: if you fall short on two sections, you retest only those two, not the entire exam. You are limited to two retests, you must wait at least 30 days between testing dates, and everything must occur inside the 12-month window tied to your application. That window creates real scheduling pressure, so build your timeline backward from it. Our pages on RC certification cost and RC exam dates and deadlines cover budgeting and scheduling in more detail.
Who Hires Registry-Certified Investigators
Because eligibility requires current qualifying medicolegal-investigation employment, this credential is typically something you earn while already working in the field rather than a way to break in cold. The natural employers are the offices that investigate deaths: coroner offices, medical examiner offices, and related agencies that employ death investigators. Certification tends to matter for credibility in court-adjacent work, for standardizing competency across staff, and for advancement within those offices.
If you are weighing the career side, our resources on RC jobs, the RC salary guide, and whether the certification is worth it can help you evaluate the return for your situation.
Keeping the Credential Active
Certification is not a one-time event. Maintenance has both annual and five-year components:
- Annual fee: $50 per year
- Recertification cycle: every five years
- Continuing education: 45 approved hours
- Ethics compliance as part of recertification
- Employment verification, or, if you are not currently employed in the field, the manual's conditional continued-competency or recertification-examination route
- Recertification administration fee: $25
Track your continuing education from day one rather than reconstructing it in year five. The manual's recertification and fee sections are the controlling sources, so verify current details with ABMDI before your cycle ends.
Sequencing Your Preparation
Because each section has its own standard and Forensic and Medical Knowledge carries the most weight, sequencing matters more than total hours. A reasonable approach schedules the heaviest and most knowledge-dense material while you are freshest, then reinforces the procedural domains through repetition.
Forensic and Medical Knowledge
- Largest domain at 20%; needs the longest runway
- Build terminology and anatomy foundations first
Scene and Body Assessment
- Pair Domains 3 and 4 (18% each) since they share concepts
- Tie to the Fundamental Tasks document
Completion, Communication, and Duties
- Cover Domains 5, 1, 2, and 6
- Do not skip the 10% domains; each has its own standard
For a fuller plan, see our RC study guide, the one-page cheat sheet for last-minute review, and our difficulty analysis. When you are ready to test yourself against realistic question styles, try the RC practice tests and use the pass rate discussion to set honest expectations.
Frequently Asked Questions
On this site, RC means Registry Certification (basic), issued by the American Board of Medicolegal Death Investigators. It is a site abbreviation rather than an official ABMDI exam code, and it is unrelated to other credentials that share the letters.
The exam contains 240 multiple-choice questions, of which 230 are graded and ten are unscored pilot questions. You have four hours, with live virtual proctoring through MonitorEDU.
No. Each section must meet its own criterion-referenced passing standard, set using a modified Angoff method. A strong score in one domain does not compensate for falling short in another.
Yes. Failed sections may be retested up to two times, with at least 30 days between testing dates, all within the 12-month application and testing window. Only the failed sections are retested.
Both are Registry-tier designations. Associate (A-ABMDI) covers the no-scene or limited-scene experience route, while Diplomate (D-ABMDI) requires documented scene experience. Both are distinct from the advanced Board Certification (Fellow) pathway.