IL HB1447

Permits forensic testing that completely consumes an evidentiary sample if the testing uses established methods with general acceptance in the field and was not conducted in bad faith.

Requires forensic scientists to take all reasonable measures to preserve a portion of evidentiary samples for subsequent testing, unless complete consumption is necessary to achieve a meaningful analytical result.

Makes it unlawful for law enforcement agencies or their agents to intentionally fail to comply with forensic testing preservation requirements, establishing a Class 4 felony penalty for violations.

Applies preservation requirements to prosecutions for sexual offenses, homicide, and other enumerated crimes under the Criminal Code of 1961 and Criminal Code of 2012.

Requires retention of all records documenting evidence possession, control, storage, and destruction for as long as the evidence exists and prohibits disposal without Local Records Commission approval.