Abbott Faces Class Action Lawsuit Over FreeStyle Libre 3 Sensors Not Working

The International Union of Operating Engineers Local 501 Security Fund filed a class action lawsuit against Abbott Diabetes Care Inc. and Abbott Laboratories in U.S. District Court for the Central District of California on August 14, 2026, alleging that the company sold defective FreeStyle Libre 3 and FreeStyle Libre 3 Plus continuous glucose monitoring sensors. The plaintiff fund claims it reimbursed members for these defective devices that failed to work properly.

FreeStyle Libre 3 and 3 Plus are wearable continuous glucose monitoring systems designed to track blood glucose levels throughout the day and transmit readings to smartphones or reader devices. The products are intended to enable people with diabetes to make informed decisions about insulin dosing and other treatments while reducing reliance on traditional fingerstick blood testing.

Abbot issued a recall of certain FreeStyle Libre 3 sensors in July 2024 due to accuracy issues. The class action alleges the company marketed these devices as reliable enough to replace standard fingerstick testing despite knowing of or failing to disclose defects that compromised their accuracy and functionality.

This is a curated brief from the PlaintiffWire news desk. Read the original report at AboutLawsuits.