MAUDE Adverse Event Report: ROCHE DIAGNOSTICS GLUCOSE HK; HEXOKINASE, GLUCOSE

Catalog Number	04657527190
Medical Device Problem Code	Non Reproducible Results (4029)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	01/15/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The serial number of the c 111 analyzer is (b)(6).The investigation is ongoing.
Event or Problem Description
The initial reporter stated they received discrepant results for one pediatric patient sample tested with glucose hk on a cobas c 111 analyzer.The sample initially resulted in a glucose value of 7.7 mmol/l.The sample was repeated twice, resulting in values of 5.5 mmol/l and 5.45 mmol/l.
Additional Manufacturer Narrative
Investigations into the laboratory's pre-analytical phase revealed potential deviations from standard protocols.The customer inverted the samples 3-4 times, whereas the manufacturer specifies 6 inversions.The investigation determined the issue is consistent with potential contamination of the reagent due to improper storage of open reagent bottles and insufficient pre-analytic sample handling.

• Brand Name: GLUCOSE HK
• Common Device Name: HEXOKINASE, GLUCOSE
• Manufacturer (Section D): ROCHE DIAGNOSTICS; 9115 hague road; indianapolis IN 46250 0457
• Manufacturer (Section G): ROCHE DIAGNOSTICS GMBH; sandhofer strasse 116; mannheim (baden-wurttemberg) 68305 ; GM 68305
• Manufacturer Contact: natalie catton ; 9115 hague road; indianapolis, IN 46250
• MDR Report Key: 24388211
• Report Number: 1823260-2026-00593
• Device Sequence Number: 13326481
• Product Code: CFR
• UDI-Device Identifier: 04015630922338
• UDI-Public: 04015630922338
• Combination Product (Y/N): N
• Initial Reporter Country: HR
• PMA/510(K) Number: K071211
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 05/13/2026

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: Health Professional
• Device Catalogue Number: 04657527190
• Device Lot Number: ASKU
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 02/04/2026
• Supplement Date Received by Manufacturer: 04/24/2026
• Initial Report FDA Received Date: 02/19/2026
• Supplement Report FDA Received Date: 05/13/2026
• 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
• Patient Sex: Unknown