A newly filed complaint against Abbott adds a real case to the broader FreeStyle Libre investigation — a Louisiana woman alleges her sensor showed a normal reading while she was in a life-threatening glucose crisis.
Allegations Only · No Settlement Yet
This article describes a product liability complaint filed against Abbott Diabetes Care Inc. and Abbott Laboratories. The statements below are unproven allegations. Abbott has not been found liable, there is no certified class, and there is no announced settlement at this time. This page is informational and is not legal or medical advice.
FreeStyle Libre 2 Lawsuit: What the New Complaint Alleges
A product liability complaint filed in the U.S. District Court for the Eastern District of Louisiana — Connoly v. Abbott Diabetes Care Inc., et al., No. 2:26-cv-00840, filed April 21, 2026 — alleges that a FreeStyle Libre 2 continuous glucose monitor (CGM) gave a falsely normal reading during a life-threatening glucose spike. According to the complaint, the plaintiff, a Louisiana woman with Type 1 diabetes, checked a high reading on her sensor in mid-December 2025, corrected it with insulin, and continued receiving normal readings over the following day. The next morning, while she felt increasingly ill, her sensor again showed a normal reading of 167 mg/dl — but when she reached the hospital minutes later, staff measured her actual blood sugar at approximately 700 mg/dl and diagnosed diabetic ketoacidosis (DKA), a life-threatening condition. The complaint alleges she spent several days in the intensive care unit as a result.The complaint alleges the sensor was defectively designed and/or manufactured so that it can report a falsely low or falsely normal glucose reading even when a user’s actual glucose level is normal or elevated, and that Abbott failed to adequately warn users of that characteristic. These are allegations only; they have not been proven in court.
In plain terms, diabetic ketoacidosis (DKA) happens when the body doesn’t have enough insulin and starts breaking down fat for fuel instead, which releases acids called ketones into the bloodstream. It can develop within hours and typically requires emergency hospitalization. The complaint’s core allegation is that the sensor’s screen told the plaintiff her blood sugar was normal when it was actually dangerously high, so she did not seek treatment until she was already in a medical crisis.
Is the FreeStyle Libre Lawsuit a Class Action?
The complaint’s caption describes it as a “Class Action Complaint” brought individually and on behalf of others similarly situated. But as filed, the complaint pleads only individual claims under the Louisiana Products Liability Act (LPLA) — the state law governing defective-product injury claims in Louisiana — and it does not include a proposed class definition or the numerosity, commonality, typicality, and adequacy allegations that Federal Rule of Civil Procedure 23 requires for a certified class action. Its request for relief seeks judgment for the individual plaintiff, not a class. No class has been certified in this or any related FreeStyle Libre case, and there is no class-wide settlement.That distinction matters for anyone searching for a FreeStyle Libre “class action”: as OpenClassActions.com has reported in its broader investigation of FreeStyle Libre injury claims, attorneys evaluating these cases have said they are more likely to proceed as individual injury claims or a coordinated mass tort than as a traditional Rule 23 class action. A mass tort groups many individual lawsuits over a similar injury together for efficiency, but unlike a class action, each person’s case is still evaluated and resolved on its own facts rather than as one combined claim. This complaint is consistent with that pattern.
How This Case Relates to the Broader FreeStyle Libre Investigation
This complaint alleges the same injury pattern described in OpenClassActions.com’s ongoing FreeStyle Libre investigation: a sensor reading that falsely shows normal or low glucose while a user’s actual blood sugar is dangerously elevated, delaying treatment and leading to a severe hyperglycemic event or DKA. It is one filed case within that wider set of claims against Abbott Diabetes Care and Abbott Laboratories over the FreeStyle Libre product family, not a separate or unrelated lawsuit. If you or a loved one had a similar experience with any generation of the FreeStyle Libre — the original FreeStyle Libre, Libre 2, Libre 3, or Libre 3 Plus — the same intake applies.Do You Qualify for a Free FreeStyle Libre Case Review?
You may qualify for a free, no-obligation case review if you or a loved one used a FreeStyle Libre sensor, experienced a significantly inaccurate or failed reading, and suffered one of the following after that reading:• Severe hypoglycemia — loss of consciousness, seizure, or a fall-related injury.
• Severe hyperglycemia or diabetic ketoacidosis (DKA), like the injury alleged in this complaint.
• Emergency-room treatment or inpatient hospitalization.
• A wrongful death following a FreeStyle Libre reading error.
Helpful evidence includes ER or hospital records, the sensor itself if preserved, a reader or app export of the glucose trace, and pharmacy or insurance records showing you were prescribed the device. You do not need every item to pre-qualify.
Read the Complaint
Frequently Asked Questions
Is the Abbott FreeStyle Libre 2 lawsuit a class action?
The complaint is captioned as a class action and says it is brought individually and on behalf of others similarly situated, but as filed it pleads only individual product-liability claims under the Louisiana Products Liability Act. It does not include a proposed class definition or the Rule 23 numerosity, commonality, typicality, and adequacy allegations a certified class action requires, and its request for relief seeks judgment for the individual plaintiff only. No class has been certified, and there is no class-wide settlement. Attorneys evaluating the broader FreeStyle Libre investigation have said claims are more likely to proceed as individual injury claims or a mass tort than as a traditional class action.
What does the FreeStyle Libre 2 lawsuit allege?
The complaint alleges a FreeStyle Libre 2 sensor was defectively designed and/or manufactured so that it can report a falsely low or falsely normal glucose reading even when a user’s actual blood glucose is elevated. It alleges the plaintiff’s sensor showed a normal reading while her blood sugar had actually spiked to roughly 700 mg/dl, and that she was hospitalized with diabetic ketoacidosis (DKA) as a result. These are unproven allegations; Abbott has not been found liable.
How is this lawsuit related to the FreeStyle Libre recall investigation?
This complaint alleges the same injury pattern that attorneys have been evaluating in the broader FreeStyle Libre investigation covered by OpenClassActions.com: a falsely low or falsely normal reading that masks a dangerous glucose excursion and leads to a severe hypoglycemic or hyperglycemic event, including DKA, hospitalization, or worse. It is one filed complaint within that wider set of claims, not a separate or unrelated case.
What is diabetic ketoacidosis (DKA)?
Diabetic ketoacidosis is a life-threatening complication of diabetes that occurs when the body has too little insulin and breaks down fat for fuel, causing acids called ketones to build up in the blood. It can develop quickly, often requires emergency hospitalization and intensive care, and can be fatal if not treated promptly.
What is a mass tort, and how is it different from a class action?
A mass tort groups many individual lawsuits over a similar injury together for efficiency, often before one court. Unlike a class action, each person’s case is still evaluated and resolved on its own facts and can result in a different outcome, rather than everyone sharing in one combined claim or settlement.
Is there a FreeStyle Libre lawsuit settlement or payout amount yet?
No. As of this complaint, there is no FreeStyle Libre class-action settlement, no established payout amount, and no fund to file a claim against. This case is at the complaint stage, meaning allegations have been filed in court but not proven, and no compensation has been awarded or offered.
Do I qualify for a free FreeStyle Libre case review?
You may qualify for a free, no-obligation case review if you or a loved one used a FreeStyle Libre sensor, experienced a significantly inaccurate or failed reading, and suffered a severe hypoglycemic or hyperglycemic episode, diabetic ketoacidosis, hospitalization, or death that required medical attention.
Sources
• Official complaint PDF: Connoly v. Abbott Diabetes Care Inc., et al., No. 2:26-cv-00840 (E.D. La., filed Apr. 21, 2026) (embedded above)• Docket — Connoly v. Abbott Diabetes Care Inc., et al.: Justia
• HarrisMartin Publishing coverage: La. Woman Says Defective Libre 2 Glucose Monitor Caused Ketoacidosis
• OpenClassActions.com — FreeStyle Libre Lawsuit Investigation
