Which PMI item is observed many days after death and helps estimate time since death?

• A. Rigor Mortis
• B. Livor Mortis
• C. Algor Mortis
• D. Entomology

Answer: (D)

Entomology is used in forensic cases to estimate time since death by studying the insects that colonize a body. After death, insects such as blowflies are often among the first to arrive, and they proceed through predictable life stages—from eggs to larvae to pupae to adults—at rates that depend on the surrounding temperature. By identifying the species present and the specific developmental stage, and combining that with historical temperature data from the scene, investigators can estimate how long the body has been exposed, providing a minimum postmortem interval and refining the overall timeline. This approach becomes particularly valuable many days after death when early signs have faded or become unreliable. In contrast, rigor mortis appears a few hours after death and fades within a day or two, livor mortis fixes after a certain period and is most informative in the short term, and algor mortis—the cooling of the body—also changes most meaningfully in the initial days and is heavily influenced by ambient conditions.