MAUDE Adverse Event Report: Abbott Diabetes Care Inc Instinct; Continuous Glucose Monitoring System

Model Number	78893-01
Medical Device Problem Code	Incorrect, Inadequate or Imprecise Result or Readings (1535)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	09/03/2026
Type of Reportable Event	Malfunction
Event or Problem Description
A customer reported receiving erroneous glucose results from an abbott diabetes care device.The customer received sensor scan results of 300.00 mg/dl, 130.00 mg/dl, 236.00 mg/dl and 362.00 mg/dl compared to readings of 115.00 mg/dl, 68.00 mg/dl, 160.00 mg/dl and 109.00 mg/dl respectively obtained on a meter and the results, when plotted on a parkes error grid, fall into the c zone, showing the difference in values to be clinically significant.The length of sensor wear was 12 days.There was no report of death, serious injury, or mistreatment associated with this event.
Additional Manufacturer Narrative
The product has been requested back for investigation.A follow-up report will be submitted upon completion of investigation activities or if additional information is obtained.All pertinent information available to abbott diabetes care has been submitted.

• Brand Name: Instinct
• Common Device Name: Continuous Glucose Monitoring System
• Manufacturer (Section D): Abbott Diabetes Care Inc; 1360 south loop road; alameda CA 94502 -700
• Manufacturer Contact: melissa pieplow ; 1360 south loop road; alameda, CA 94502--700 ; +1(510)384-5975
• MDR Report Key: 50932535
• Report Number: 2954323-2026-430675
• Device Sequence Number: 21223380
• Product Code: QLG
• UDI-Device Identifier: 30357599880003
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K233537
• 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
• Report Date (Section B): 09/29/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Model Number: 78893-01
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 09/03/2026
• Initial Report FDA Received Date: 09/29/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Patient Sex: Unknown