A medical examiner determines a deceased person’s cause of death by conducting an autopsy. Their examination may include inspecting the condition of internal organs, running a toxicology screening test, performing pathology tests to detect diseases, evaluating tissue or fluid samples, and documenting distinctive markings, such as scars, bruises, wounds, tattoos, and birthmarks. Medical examiners typically work in morgues. They often work with law enforcement during investigations. They may visit crime scenes to assist a CSI team, and they testify in court. Medical examiners are also responsible for maintaining death records and issuing death certificates in most jurisdictions. In some cities or states, there is overlap in job duties with medical examiners, forensic pathologists and coroners.