MAUDE Adverse Event Report: ABBOTT DIABETES CARE LTD FREESTYLE LIBRE 3; CONTINUOUS GLUCOSE MONITORING SYSTEM

Model Number	72077-01
Medical Device Problem Codes	Device Alarm System (1012); Application Program Problem (2880)
Health Effect - Clinical Code	Insufficient Information (4580)
Date of Event	02/09/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
An alarm issue was reported with the abbott diabetes care (adc) device in use with iphone 16e with ios operating system version 26.2.1.A customer reported receiving a signal loss and was not alerted of changes in glucose level.The customer experienced unspecified symptoms and stated that the paramedics arrived to the customer's home.The customer received unspecified third-party treatment from the paramedics.There was no report of death or permanent impairment associated with this event.
Additional Manufacturer Narrative
Investigation is pending at this time.A follow up will be submitted once additional information is obtained.The date of event is unknown.The date entered in section b3 is the date abbott diabetes care became aware of the event.All pertinent information available to abbott diabetes care has been submitted.
Event or Problem Description
An alarm issue was reported with the abbott diabetes care (adc) device in use with iphone 16e with ios operating system version 26.2.1 and app version 3.6.6.12977.A customer reported receiving a signal loss and was not alerted of changes in glucose level.The customer experienced unspecified symptoms and stated that the paramedics arrived to the customer's home.The customer received unspecified third-party treatment from the paramedics.There was no report of death or permanent impairment associated with this event.
Additional Manufacturer Narrative
The product has been requested back for an investigation and the customer agreed to return the device; however, at this time product has not yet been received.The most probable root causes associated with this failure mode are disconnected, faulty or damaged components, software/data corruption, or misuse.However, mitigations are in place to reduce and prevent such issues.All vital manufacturing steps are validated, monitored, and verified during manufacturing to ensure the system is in conformance with the verified design.All vital functions are monitored by the system and, when necessary, function is suspended to safeguard against inaccurate results.Labeling is provided to instruct the user on the intended use of all vital parts of the system to minimize misuse.The most probable root causes associated with this failure mode are software/data corruption or misuse.However, mitigations are in place to reduce and prevent such issues.All vital functions are monitored by the system and, when necessary, function is suspended to safeguard against inaccurate results.Labeling is provided to instruct the user on the intended use of all vital parts of the system to minimize misuse.All complaints and complaint trends are investigated to determine if there is a product defect/ deficiency.If a product defect/ deficiency is identified, a risk evaluation is completed and compared to the risk management report, to ensure the risk profile has not changed.Additionally, as a part of abbott¿s post-market surveillance process, all risk evaluations with associated complaint data are reviewed annually to determine if the risk profiles have changed as compared to the product risk management reports.These monitoring processes ensure that all product risk profiles remain acceptable and have a positive benefit/ risk ratio.A valid serial number has not been provided for this complaint.An extended investigation has been performed for the reported complaint and there was no indication that the product did not meet specification.A tripped trend review was conducted for the reported complaint and the product; no trends were identified that would indicate any product related issues.The user reported signal loss.The reported issue was investigated.The reported configuration was not compatible with the customer's reported application.The latest revision of the compatibility guide was available to the customer on the abbott diabetes care website.If product is returned, a physical investigation will be performed per adc's established processes and procedures and a report will be submitted upon completion of investigation.All pertinent information available to abbott diabetes care has been submitted.

• Brand Name: FREESTYLE LIBRE 3
• Common Device Name: CONTINUOUS GLUCOSE MONITORING SYSTEM
• Manufacturer (Section D): ABBOTT DIABETES CARE LTD; range road; witney 12345 -700; UK 12345-7001
• Manufacturer Contact: patricia reis castro ; 1360 south loop road; alameda 94502-7001 ; 4157205405
• MDR Report Key: 24377372
• Report Number: 2954323-2026-09636
• Device Sequence Number: 4837504
• Product Code: QLG
• UDI-Device Identifier: 00357599817008
• UDI-Public: 00357599817008
• Combination Product (Y/N): N
• Initial Reporter Country: GM
• PMA/510(K) Number: K212132
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Consumer
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 03/17/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Operator of Device: Lay User/Patient
• Device Model Number: 72077-01
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/09/2026
• Supplement Date Received by Manufacturer: 02/18/2026
• Initial Report FDA Received Date: 02/18/2026
• Supplement Report FDA Received Date: 03/17/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Sex: Unknown