University of Illinois Chicago releases report on faulty Analytical Forensic Testing Laboratory blood tests in marijuana DUI cases

CHICAGO (WLS) — The University of Illinois Chicago has issued an internal investigation report concerning flawed lab testing, which may have compromised over 1,000 cannabis DUI cases in the Chicago metro region.

Many DUI cases were charged based on results from UIC’s Analytical Forensic Testing Laboratory, which ceased human testing in February 2024.

Since the ABC7 I-Team’s reporting, more than a dozen criminal cases have been dropped.

ABC7 Chicago is now streaming 24/7. Click here to watch

UIC engaged Taft Stettinius & Hollister LLP to conduct an investigation and produce an independent report on the issues and allegations regarding THC measurement inaccuracies.

At issue are results that were unable to distinguish Delta-9 THC from other commonly encountered THC isomers such as Delta-8.

The lab had notified police departments and prosecutor’s offices in Illinois that there may have been problems with some results.

Criminal defense attorney Don Ramsell, who represents clients charged with cannabis DUI, told the I-Team the report is just a corporate whitewash.

“The University of Illinois engaged a law firm to defend them, and I believe, to avoid approximately 2000 potential lawsuits,” Ramsell stated.

The report concludes UIC’s Analytical Forensic Testing Laboratory methods should have “been modified” to distinguish between two related forms of THC. However, it goes on to say, “Nevertheless, the reliability of those test results may be confirmed on a case-by-case basis…” something Ramsell does not believe is true.

To suggest you have completed the investigation, I think is laughable

Don Ramsell, criminal defense attorney

“Now that the labs have been closed for over a year, that means every sample is incapable of being retested, despite what some lawyer might write in a position paper,” he claims.

ABC7 Chief Legal Analyst Gil Soffer said the results of the law firm’s analysis don’t absolve UIC’s lab of wrongdoing, with a key figure at the former lab declining interviews by the investigative team.

“This was unusual, I think, though, because the report really took pains to say that although errors were made and although things were not done that should have been done. It doesn’t necessarily mean that all tests were wrong from the get go,” Soffer said.

He pointed out that a key figure at the former lab declined interviews by the investigative team.

“First, will there be a criminal penalty here? Will someone be found to have deliberately misled somebody else? Unclear from this report, it didn’t find that someone had misled, but it also doesn’t rule out that possibility, and I could see further inquiry there,” Soffer said. “The other question is, could somebody, the lab, be held liable in negligence for what happened here?”

Ramsell added that there are still many unanswered questions.

“To suggest you have completed the investigation, I think is laughable,” he said.

UIC declined to talk to the I-Team about the report, and the Cook County State’s Attorney’s Office said it will continue to review any cases that may have been affected by faulty testing.

The DuPage County State’s Attorney’s Office declined to comment on the report, but it has already dismissed 19 cases involving the UIC lab testing.

Copyright © 2025 WLS-TV. All Rights Reserved.

You May Also Like
NYC elementary students make Broadway debut with a little magic from Disney Theatrical Group

NYC Elementary Students Make Broadway Debut With Support From Disney Theatrical Group

NEW YORK — Elementary school students got a chance to make their…
Palisades Fire suspect hit with new charges in grand jury indictment

Uber Passenger Says Palisades Fire Suspect Gave Off ‘Incel Energy’ During Unsettling Ride

A passenger who says he rode with the man accused of starting…
Texas plane crash leaves one dead, more injured after business jet catches fire on highway

Texas Highway Plane Crash: 1 Dead, Several Injured After Business Jet Bursts Into Flames

A business jet went down on a Texas highway Tuesday night and…
Barry Moore Wins Runoff for Tuberville's Senate Seat, Despite a 'Dewey Defeats Truman' Snafu

Barry Moore Secures Tuberville’s Senate Seat in Runoff, Despite Election-Night Reporting Mix-Up

Alabama Republicans headed into a runoff for the U.S. Senate between Rep.…
Couple recalls narrow escape from Merrillville, Indiana tornado as severe weather tomorrow includes tornado risk, strong storms

Couple Recalls Close Call in Merrillville Tornado as Tomorrow’s Severe Weather Brings New Tornado Threat

MERRILLVILLE, Ind. (WLS) — A week after a tornado ripped through Merrillville,…
G7 leaders back Trump's plan to end Iran war that faces skepticism at home

G7 Leaders Endorse Trump’s Iran War Exit Plan Amid Skepticism at Home

EVIAN-LES-BAINS, France — Leaders at the Group of Seven summit on Wednesday…
Search underway for suspect after 2 people shot inside Delaware hospital: police

Manhunt Launched After 2 People Shot Inside Delaware Hospital, Police Say

Two people were shot Tuesday at a hospital in Delaware, triggering a…
California co-eds killed after being swept out to sea by dangerous waves while sleeping

California Co-eds Swept Out to Sea by Dangerous Waves While Sleeping, Authorities Say

Two California college students died after strong surf and rising tides swept…
A mother's concern, call to authorities may have prevented potential attack on UFC event at the White House

Mother’s Tip to Authorities May Have Stopped Potential Attack at White House UFC Event

A suspected plan to attack Sunday night’s UFC event at the White…
US Secret Service prepares to secure Jackson Park, Chicago Obama Center Opening Ceremony

US Secret Service Finalizes Security Plan for Chicago’s Jackson Park Ahead of Obama Center Opening Ceremony

CHICAGO (WLS) — The U.S. Secret Service says it has spent the…
5 chilling details from the alleged White House attack plot tied to UFC event

5 Disturbing Details in the Alleged White House Attack Plot Linked to a UFC Event

FBI foils alleged drone terror plot targeting White House UFC event The…
New charges against DC National Guard shooting suspect open death penalty door

DC Guard Shooting Suspect Faces Death Penalty in Dramatic First Court Appearance

An Afghan national accused of launching a deadly ambush-style attack on National…