Millions of glucose monitors from Abbott Diabetes Care are providing users with incorrect readings, the FDA said in an alert Tuesday. The errors have been linked with at least seven deaths and more than 700 serious injuries worldwide. Abbott Diabetes Care stated that certain FreeStyle Libre 3 and FreeStyle Libre 3 Plus sensors provide incorrect low glucose readings. “If undetected, incorrect low glucose readings over an extended period may lead to wrong treatment decisions for people living with diabetes, such as excessive carbohydrate intake or skipping or delaying insulin doses,” the FDA said. Abbott warned that about 3 million of its products are impacted. Patients can visit FreeStyleCheck.com to see if their sensors are affected and to get a replacement for free.

As of November 14, 2025, Abbott has reported 736 serious injuries and seven deaths associated with this issue.

Patients can visit FreeStyleCheck.com to see if their sensors are affected and to get a replacement for free.

The FDA has also published specific information about the affected products in its alert. The agency considers this to be a “potentially high-risk issue” and will continue to update its website as information becomes available.