55 ILCS 5/3-3013
Every coroner, whenever, as soon as he knows or is informed that the dead body of any person is found, or lying within his county, whose death is suspected of being:
shall go to the place where the dead body is and take charge of the same and shall make a preliminary investigation into the circumstances of the death. In the case of death without attendance by a licensed physician, the body may be moved with the coroner's consent from the place of death to a mortuary in the same county. Coroners in their discretion shall notify such physician as is designated in accordance with Section 3-3014 to attempt to ascertain the cause of death, either by autopsy or otherwise.
In cases of accidental death involving a motor vehicle in which the decedent was (1) the operator or a suspected operator of a motor vehicle, or (2) a pedestrian 16 years of age or older, the coroner shall require that a blood specimen of at least 30 cc., and if medically possible a urine specimen of at least 30 cc. or as much as possible up to 30 cc., be withdrawn from the body of the decedent in a timely fashion after the crash causing his death, by such physician as has been designated in accordance with Section 3-3014, or by the coroner or deputy coroner or a qualified person designated by such physician, coroner, or deputy coroner. If the county does not maintain laboratory facilities for making such analysis, the blood and urine so drawn shall be sent to the Illinois State Police or any other accredited or State-certified laboratory for analysis of the alcohol, carbon monoxide, and dangerous or narcotic drug content of such blood and urine specimens. Each specimen submitted shall be accompanied by pertinent information concerning the decedent upon a form prescribed by such laboratory. Any person drawing blood and urine and any person making any examination of the blood and urine under the terms of this Division shall be immune from all liability, civil or criminal, that might otherwise be incurred or imposed.
In all other cases coming within the jurisdiction of the coroner and referred to in subparagraphs (a) through (e) above, blood, and, whenever possible, urine samples shall be analyzed for the presence of alcohol and other drugs. When the coroner suspects that drugs may have been involved in the death, either directly or indirectly, a toxicological examination shall be performed which may include analyses of blood, urine, bile, gastric contents, and other tissues. When the coroner suspects a death is due to toxic substances, other than drugs, the coroner shall consult with the toxicologist prior to collection of samples. Information submitted to the toxicologist shall include information as to height, weight, age, sex, and race of the decedent as well as medical history, medications used by, and the manner of death of the decedent.
When the coroner or medical examiner finds that the cause of death is due to homicidal means, the coroner or medical examiner shall cause blood and buccal specimens (tissue may be submitted if no uncontaminated blood or buccal specimen can be obtained), whenever possible, to be withdrawn from the body of the decedent in a timely fashion. For proper preservation of the specimens, collected blood and buccal specimens shall be dried and tissue specimens shall be frozen if available equipment exists. As soon as possible, but no later than 30 days after the collection of the specimens, the coroner or medical examiner shall release those specimens to the police agency responsible for investigating the death. As soon as possible, but no later than 30 days after the receipt from the coroner or medical examiner, the police agency shall submit the specimens using the agency case number to a National DNA Index System (NDIS) participating laboratory within this State, such as the Illinois State Police, Division of Forensic Services, for analysis and categorizing into genetic marker groupings. The results of the analysis and categorizing into genetic marker groupings shall be provided to the Illinois State Police and shall be maintained by the Illinois State Police in the State central repository in the same manner, and subject to the same conditions, as provided in Section 5-4-3 of the Unified Code of Corrections. The requirements of this paragraph are in addition to any other findings, specimens, or information that the coroner or medical examiner is required to provide during the conduct of a criminal investigation.
In all counties, in cases of apparent suicide, homicide, or accidental death or in other cases, within the discretion of the coroner, the coroner may summon 8 persons of lawful age from those persons drawn for petit jurors in the county. The summons shall command these persons to present themselves personally at such a place and time as the coroner shall determine, and may be in any form which the coroner shall determine and may incorporate any reasonable form of request for acknowledgment which the coroner deems practical and provides a reliable proof of service. The summons may be served by first class mail. From the 8 persons so summoned, the coroner shall select 6 to serve as the jury for the inquest. Inquests may be continued from time to time, as the coroner may deem necessary. The 6 jurors selected in a given case may view the body of the deceased. If at any continuation of an inquest one or more of the original jurors shall be unable to continue to serve, the coroner shall fill the vacancy or vacancies. A juror serving pursuant to this paragraph shall receive compensation from the county at the same rate as the rate of compensation that is paid to petit or grand jurors in the county. The coroner shall furnish to each juror without fee at the time of his discharge a certificate of the number of days in attendance at an inquest, and, upon being presented with such certificate, the county treasurer shall pay to the juror the sum provided for his services.
In counties which have a jury commission, in cases of apparent suicide or homicide or of accidental death, the coroner may conduct an inquest. The jury commission shall provide at least 8 jurors to the coroner, from whom the coroner shall select any 6 to serve as the jury for the inquest. Inquests may be continued from time to time as the coroner may deem necessary. The 6 jurors originally chosen in a given case may view the body of the deceased. If at any continuation of an inquest one or more of the 6 jurors originally chosen shall be unable to continue to serve, the coroner shall fill the vacancy or vacancies. At the coroner's discretion, additional jurors to fill such vacancies shall be supplied by the jury commission. A juror serving pursuant to this paragraph in such county shall receive compensation from the county at the same rate as the rate of compensation that is paid to petit or grand jurors in the county.
In every case in which a fire is determined to be a contributing factor in a death, the coroner shall report the death to the Office of the State Fire Marshal. The coroner shall provide a copy of the death certificate (i) within 30 days after filing the permanent death certificate and (ii) in a manner that is agreed upon by the coroner and the State Fire Marshal.
In every case in which a drug overdose is determined to be the cause or a contributing factor in the death, the coroner or medical examiner shall report the death to the Department of Public Health. The Department of Public Health shall adopt rules regarding specific information that must be reported in the event of such a death. If possible, the coroner shall report the cause of the overdose. As used in this Section, "overdose" has the same meaning as it does in Section 414 of the Illinois Controlled Substances Act. The Department of Public Health shall issue a semiannual report to the General Assembly summarizing the reports received. The Department shall also provide on its website a monthly report of overdose death figures organized by location, age, and any other factors the Department deems appropriate.
In addition, in every case in which domestic violence is determined to be a contributing factor in a death, the coroner shall report the death to the Illinois State Police.
All deaths in State institutions and all deaths of wards of the State or youth in care as defined in Section 4d of the Children and Family Services Act in private care facilities or in programs funded by the Department of Human Services under its powers relating to mental health and developmental disabilities or alcoholism and substance abuse or funded by the Department of Children and Family Services shall be reported to the coroner of the county in which the facility is located. If the coroner has reason to believe that an investigation is needed to determine whether the death was caused by maltreatment or negligent care of the ward of the State or youth in care as defined in Section 4d of the Children and Family Services Act, the coroner may conduct a preliminary investigation of the circumstances of such death as in cases of death under circumstances set forth in subparagraphs (a) through (e) of this Section.
55 ILCS 5/3-3013