ABMDI Death Scene Investigation Basics Exam Prep – Real Practice Questions,
Answers & Detailed Rationales (Updated 2026) | Medicolegal Death Investigation
Procedures, Scene Documentation & Evidence Collection, Postmortem Changes &
Time of Death Estimation, Injury Pattern Recognition, Chain of Custody, Forensic
Photography, Autopsy Coordination, Trauma & Toxicology Basics, ABMDI
Certification Review
Question 1: What is the FIRST priority upon arriving at a death scene?
A. Photograph the decedent's position
B. Confirm or pronounce death
C. Exercise scene safety
D. Interview witnesses
CORRECT ANSWER: C. Exercise scene safety
Rationale: Scene safety is the paramount initial concern for any death investigator.
Before any investigative activities can proceed, the investigator must ensure the scene
is secure and free from hazards such as biohazards, structural instability, hazardous
materials, or potential violence. This protects the investigator, other responders, and
preserves the integrity of the scene for subsequent examination.
www.ojp.gov
Question 2: Which of the following is the PRIMARY purpose of establishing chain of
custody at a death scene?
A. To expedite the release of the body to the funeral home
B. To document the chronological handling of evidence for legal admissibility
C. To determine the cause of death at the scene
D. To identify the next of kin
CORRECT ANSWER: B. To document the chronological handling of evidence for
legal admissibility
Rationale: Chain of custody provides a documented, unbroken record of who has
handled evidence, when, and for what purpose. This documentation is critical for
maintaining the integrity and admissibility of physical evidence in legal proceedings.
Any break in the chain can compromise the evidentiary value of collected items.
www.ojp.gov
Question 3: When documenting postmortem changes, which finding is MOST
indicative of the body having been moved after death?
A. Uniform livor mortis consistent with body position
B. Rigor mortis fully established in all muscle groups
C. Livor mortis inconsistent with the position in which the body was found
D. Moderate decomposition with insect activity
CORRECT ANSWER: C. Livor mortis inconsistent with the position in which the
body was found
, Rationale: Livor mortis (lividity) is the settling of blood in dependent body parts after
circulation ceases. If lividity patterns do not correspond to the position in which the
body was discovered, this strongly suggests the body was repositioned after death,
which is a critical investigative finding that may indicate foul play or scene alteration.
www.ojp.gov
Question 4: Which method of decedent identification is considered the MOST
scientifically reliable?
A. Visual identification by a family member
B. Personal effects found on the body
C. Fingerprint comparison
D. Clothing description
CORRECT ANSWER: C. Fingerprint comparison
Rationale: Fingerprint comparison is a scientifically validated method of positive
identification based on unique, unchanging ridge patterns. While visual identification
and personal effects can provide preliminary leads, they are subjective and potentially
unreliable. Fingerprint analysis, along with dental records and DNA, constitutes the gold
standard for definitive decedent identification.
www.ojp.gov
Question 5: What is the PRIMARY purpose of conducting a scene "walk-through"
before collecting evidence?
A. To determine the time of death
B. To identify potential hazards and establish an investigative plan
C. To interview witnesses immediately
D. To photograph the decedent from all angles
CORRECT ANSWER: B. To identify potential hazards and establish an investigative
plan
Rationale: The initial scene walk-through allows investigators to assess the overall
scene, identify potential hazards (biohazards, structural dangers, evidence locations),
and develop a systematic approach for documentation and evidence collection. This
preliminary assessment prevents contamination, ensures thoroughness, and guides the
sequence of investigative activities.
www.ojp.gov
Question 6: Which of the following is a CORRECT procedure when preserving trace
evidence on a decedent's hands?
A. Place plastic bags over the hands and seal tightly
B. Place unused paper bags over the hands and secure loosely
Answers & Detailed Rationales (Updated 2026) | Medicolegal Death Investigation
Procedures, Scene Documentation & Evidence Collection, Postmortem Changes &
Time of Death Estimation, Injury Pattern Recognition, Chain of Custody, Forensic
Photography, Autopsy Coordination, Trauma & Toxicology Basics, ABMDI
Certification Review
Question 1: What is the FIRST priority upon arriving at a death scene?
A. Photograph the decedent's position
B. Confirm or pronounce death
C. Exercise scene safety
D. Interview witnesses
CORRECT ANSWER: C. Exercise scene safety
Rationale: Scene safety is the paramount initial concern for any death investigator.
Before any investigative activities can proceed, the investigator must ensure the scene
is secure and free from hazards such as biohazards, structural instability, hazardous
materials, or potential violence. This protects the investigator, other responders, and
preserves the integrity of the scene for subsequent examination.
www.ojp.gov
Question 2: Which of the following is the PRIMARY purpose of establishing chain of
custody at a death scene?
A. To expedite the release of the body to the funeral home
B. To document the chronological handling of evidence for legal admissibility
C. To determine the cause of death at the scene
D. To identify the next of kin
CORRECT ANSWER: B. To document the chronological handling of evidence for
legal admissibility
Rationale: Chain of custody provides a documented, unbroken record of who has
handled evidence, when, and for what purpose. This documentation is critical for
maintaining the integrity and admissibility of physical evidence in legal proceedings.
Any break in the chain can compromise the evidentiary value of collected items.
www.ojp.gov
Question 3: When documenting postmortem changes, which finding is MOST
indicative of the body having been moved after death?
A. Uniform livor mortis consistent with body position
B. Rigor mortis fully established in all muscle groups
C. Livor mortis inconsistent with the position in which the body was found
D. Moderate decomposition with insect activity
CORRECT ANSWER: C. Livor mortis inconsistent with the position in which the
body was found
, Rationale: Livor mortis (lividity) is the settling of blood in dependent body parts after
circulation ceases. If lividity patterns do not correspond to the position in which the
body was discovered, this strongly suggests the body was repositioned after death,
which is a critical investigative finding that may indicate foul play or scene alteration.
www.ojp.gov
Question 4: Which method of decedent identification is considered the MOST
scientifically reliable?
A. Visual identification by a family member
B. Personal effects found on the body
C. Fingerprint comparison
D. Clothing description
CORRECT ANSWER: C. Fingerprint comparison
Rationale: Fingerprint comparison is a scientifically validated method of positive
identification based on unique, unchanging ridge patterns. While visual identification
and personal effects can provide preliminary leads, they are subjective and potentially
unreliable. Fingerprint analysis, along with dental records and DNA, constitutes the gold
standard for definitive decedent identification.
www.ojp.gov
Question 5: What is the PRIMARY purpose of conducting a scene "walk-through"
before collecting evidence?
A. To determine the time of death
B. To identify potential hazards and establish an investigative plan
C. To interview witnesses immediately
D. To photograph the decedent from all angles
CORRECT ANSWER: B. To identify potential hazards and establish an investigative
plan
Rationale: The initial scene walk-through allows investigators to assess the overall
scene, identify potential hazards (biohazards, structural dangers, evidence locations),
and develop a systematic approach for documentation and evidence collection. This
preliminary assessment prevents contamination, ensures thoroughness, and guides the
sequence of investigative activities.
www.ojp.gov
Question 6: Which of the following is a CORRECT procedure when preserving trace
evidence on a decedent's hands?
A. Place plastic bags over the hands and seal tightly
B. Place unused paper bags over the hands and secure loosely
