An autopsy is a thorough medical examination of a body after death, performed to determine the cause and manner of death. It involves both an external inspection and an internal examination of organs and tissues. In the United States, only about 3.7% of deaths result in an autopsy, a rate that has been declining steadily since 2003.
Why Autopsies Are Performed
Autopsies fall into two broad categories, each serving a different purpose.
A clinical autopsy is performed in a hospital setting to diagnose the disease or condition that caused death, especially when doctors were unable to reach a definitive diagnosis while the person was alive. Sometimes clinical autopsies are done even when the cause of death seems clear, to better understand how a disease progressed. These require written consent from the next of kin, who can specify the extent of the examination.
A forensic (medicolegal) autopsy is ordered by law enforcement or a court to answer legal questions: who the person was, what killed them, when they died, and whether a crime was involved. Family consent is not required for a forensic autopsy. Police, a district attorney, or a judge can order one whenever a death raises legal concerns.
When an Autopsy Is Legally Required
Each state sets its own rules, but certain types of deaths nearly always trigger a mandatory autopsy. These include:
- Violent or suspicious deaths: homicide, suicide, accidents, or any death in unusual or unexplained circumstances
- Unknown cause of death: when no clear medical explanation exists, including sudden death in someone who appeared healthy
- Deaths involving drugs or poison: known or suspected overdoses, toxic exposures, or poisoning
- Deaths in custody: anyone who dies while in police or jail custody
- Infant and child deaths: sudden infant death, suspected child abuse, or any unexplained death of a child
- Unidentified bodies: when the person’s identity is unknown
- Fire, explosion, or drowning deaths
Beyond these categories, coroners and medical examiners generally have discretion to order an autopsy whenever they believe it serves the public interest or could reveal a public health threat.
Who Performs an Autopsy
Two different systems handle death investigations in the United States, depending on where you live. Medical examiners are appointed physicians, typically trained as forensic pathologists. Coroners are elected or appointed officials who, in most states, are not required to be physicians at all. State law often requires coroners to complete specific death investigation training, but the qualifications vary widely. Twenty states and Washington, D.C. require that autopsies be performed only by pathologists, regardless of whether the jurisdiction uses a coroner or medical examiner system.
What Happens During an Autopsy
The procedure has two main phases. The external examination comes first. The pathologist documents the body’s physical characteristics, notes any injuries, scars, tattoos, or other identifying features, and photographs everything. Clothing and personal items are cataloged. In forensic cases, evidence like fibers, residue, or biological material may be collected from the body’s surface.
The internal examination follows. The pathologist makes a large Y-shaped incision across the chest and abdomen to access the organs. Each major organ is removed, weighed, measured, and visually inspected for abnormalities. Small tissue samples are taken for microscopic analysis. The brain is examined separately after the scalp is opened. Throughout the process, the pathologist dictates observations that will form the basis of the final report.
After the examination, organs are typically returned to the body before it is released to the family. In some cases, an organ may be retained for extended study if more testing is needed. One review of retention policies found that in about 14% of cases, retained organs were released back with the body after a set period, while a small percentage were examined fresh and the rest were eventually cremated.
Laboratory Testing After the Examination
The physical examination is only part of the picture. Tissue samples are processed into thin slices, placed on glass slides, and examined under a microscope. This can reveal disease processes, infections, or cellular damage invisible to the naked eye.
Toxicology screening is a standard component of most forensic autopsies. Samples of blood, urine, and other body fluids are tested for drugs, alcohol, medications, and poisons. Routine screens typically check for cocaine, amphetamines, marijuana, PCP, and opioids. Additional panels may look for common over-the-counter drugs like acetaminophen and aspirin, as well as alcohol, antidepressants, and sedatives.
When results might be used in court, the laboratory follows strict chain-of-custody protocols. Every sample gets tamper-evident seals and is stored under controlled conditions (refrigerated or frozen depending on what’s being tested). Preliminary screening results are confirmed using highly precise instruments that can identify exactly which substances are present and in what amounts.
How Long Results Take
Preliminary findings from the physical examination are often available within a day or two, sometimes even communicated verbally to investigators or family members shortly after the procedure. The full picture takes longer.
Toxicology results currently average around 40 days. Complete autopsy reports, including all lab work and microscopic findings, have a general target turnaround of 90 days. For drug overdose deaths, some offices aim to finalize reports within 45 days. These timelines can stretch further in complex cases or when labs face backlogs.
Impact on Funeral Arrangements
One of the most common concerns families have is whether an autopsy will prevent an open-casket funeral. In nearly all cases, it will not. All incisions made during the procedure are carefully closed afterward, and they can be hidden by clothing and standard casket positioning. Funeral directors regularly embalm and prepare bodies that have undergone a full autopsy. The procedures are performed with the goal of preserving the person’s appearance and minimizing visible changes.
Cost of a Private Autopsy
When a death doesn’t meet the legal criteria for a mandatory autopsy, families can still request one privately. Forensic autopsies ordered by the government are performed at no cost to the family. Private autopsies, however, are paid out of pocket. Prices vary widely depending on the pathologist, the location, and the scope of testing involved. If you’re considering a private autopsy, it’s worth contacting multiple pathologists or firms for quotes and references, as costs can differ substantially from one provider to the next.