PMI stands for what?

• A. Postmortem interval
• B. Postmortem identification
• C. Primary murder investigation
• D. Postmortem integrity

Answer: (A)

The time elapsed since death is what this term refers to. PMI stands for Postmortem Interval, the window of time from when death occurred to when the body is found or examined. This measure helps investigators narrow down when death happened and guides the overall timeline of events in a case. In practice, PMI is estimated using multiple clues such as how the body’s temperature changes after death, signs of rigor and livor mortis, stages of decomposition, and evidence from insect life cycles, all of which are influenced by the environment. The other options point to different concepts—identifying the person, the investigative process itself, or an unrelated term—so they don’t fit the intended meaning.