A post mortem, also called an autopsy, is a medical examination of a body after death to determine the cause and manner of death. It involves an external inspection of the body followed by an internal examination of the organs, and it typically takes a pathologist two to four hours to complete. Post mortems are performed for both legal and medical reasons, and the process can be ordered by a legal authority or requested by a family.
Why Post Mortems Are Performed
There are two broad reasons a post mortem takes place: to answer a legal question or to answer a medical one.
A forensic post mortem is ordered by a coroner or medical examiner when the circumstances of a death are suspicious, violent, unexplained, or otherwise fall under legal jurisdiction. Each state sets its own standards for which deaths require investigation, but common triggers include sudden deaths in otherwise healthy people, deaths that occur outside a hospital, deaths involving potential foul play, and deaths in custody. Families cannot decline a legally mandated post mortem.
A clinical (or hospital) post mortem is a separate process. It happens when a person dies of natural causes in a medical setting and the treating team or the family wants a clearer picture of what happened. These require consent from the next of kin. A clinical post mortem can confirm or correct a diagnosis, reveal conditions that weren’t detected during life, and provide information that may be relevant to surviving family members, such as hereditary diseases.
What Happens During the Examination
The process begins with a thorough external examination. The pathologist documents the body’s physical characteristics, any injuries, scars, or other markings, and notes signs that help establish the time and circumstances of death.
For the internal examination, the pathologist makes a Y-shaped incision across the chest and abdomen. The chest plate is lifted to expose the organs. Depending on the case, organs may be removed one by one for individual inspection or taken out together in blocks for dissection. The brain is examined separately, accessed through an incision at the back of the scalp. Throughout the process, the pathologist weighs organs, takes tissue samples for microscopic analysis, and collects fluids for laboratory testing. The body is then carefully reconstructed and sutured closed.
The laboratory work that follows the physical exam is where many of the most important findings come from. Tissue samples from various organs are prepared on slides and examined under a microscope to look for disease, infection, or damage at the cellular level. Toxicology testing checks blood and other body fluids for drugs, alcohol, poisons, or medications. In forensic cases, additional samples may be collected, including swabs for DNA, microbiological cultures from blood or tissue, and chemical analysis of body fluids.
How Long Results Take
The physical examination itself takes two to four hours, but the full picture takes much longer to assemble. Preliminary results, covering the most obvious findings from the physical exam, can be available within two to three days. The final report, which includes all microscopic and toxicology results, typically takes around six weeks for a clinical post mortem. Forensic cases usually take longer because they involve more complex testing and may need to meet legal standards for evidence.
Forensic vs. Clinical Post Mortems
The key practical difference between these two types comes down to who orders it and whether consent is needed. A forensic post mortem is a legal proceeding. A coroner or medical examiner has the authority to mandate it regardless of family wishes, and the findings may be used in criminal investigations or court proceedings. A clinical post mortem is voluntary and requires the family’s permission.
The scope also differs. Forensic examinations tend to be more exhaustive, with detailed documentation of every injury, extensive toxicology panels, and careful evidence preservation. Clinical post mortems may focus on specific organ systems related to the person’s known medical conditions, though a full examination is also common.
Virtual Post Mortems
CT scanning and other imaging technologies are increasingly used as part of the post mortem process. These scans are particularly good at detecting skeletal injuries, with three-dimensional reconstructions that can characterize bone fractures in detail that surpasses what a traditional examination reveals. Imaging is also effective for facial injuries.
However, imaging alone has significant limitations. Traditional post mortems remain more effective at identifying injuries to organs in the chest and abdomen. CT scanning without contrast is not recommended as a substitute for conventional autopsy in cases of fatal abdominal trauma because it misses too many findings. In practice, imaging is most often used as a complement to the physical examination rather than a replacement for it.
Cost of a Private Post Mortem
When a post mortem is ordered by a coroner or medical examiner, there is no cost to the family. But if you want to request one privately, perhaps because the death didn’t meet the criteria for a legal investigation and you still have unanswered questions, you will typically need to pay out of pocket. A full private autopsy costs around $7,500, while a partial examination focusing on one area of the body runs approximately $5,100. These fees generally don’t cover specialized evaluations like detailed brain analysis, unusual laboratory tests, or expert testimony if the case later involves legal proceedings.
Consent and Religious Considerations
For clinical post mortems, the next of kin has full authority to grant or withhold consent. You can also consent to a partial examination, limiting the procedure to specific organs or body regions, rather than agreeing to a full autopsy.
Religious objections to post mortems are a recognized concern in medical and legal practice. Several faith traditions discourage or prohibit autopsy, viewing it as a violation of the body’s integrity. When a post mortem is legally mandated, however, religious objections generally do not override the coroner’s or medical examiner’s authority. This creates genuine ethical tension, and individual jurisdictions handle it differently. In some cases, accommodations can be made, such as prioritizing the case so the body is returned to the family as quickly as possible or limiting the examination’s scope to what is strictly necessary.