Reported Reactions

Devices › System, test, blood glucose, over the counter

Device brand name · Blood glucose monitoring device

Accu-Chek Performa Combo: medical device reports filed with FDA

2,023 reports name it, 2013–2026. Manufacturer given most often on reports: Roche Diabetes Care. Product code NBW.

2,023
device reports naming the brand
0% of all MAUDE reports · about 150 a year
42
reports, 12 months to August 2026
113 in the 12 months before
98.6%
classified as malfunction
90.4% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 2,023 reports that name the brand "Accu-Chek Performa Combo" (blood glucose monitoring device), received between January 2013 and August 2026; the manufacturer given most often on reports is Roche Diabetes Care. Spellings of one product vary from report to report.

42 reports arrived in the 12 months to August 2026, down 63% from 113 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (98.6%) and injury (1.4%); across all system, test, blood glucose, over the counter reports (product code NBW) death is recorded in 0% and malfunction in 90.4%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are display difficult to read (58.7%), no display/image (20.5%) and display or visual feedback problem (9%). The patient problems coded most often are hyperglycemia, hypoglycemia and aneurysm. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Reports by month, five years

01631Sep 2021: 31Oct 2021: 22Nov 2021: 20Dec 2021: 202022Jan 2022: 23Feb 2022: 28Mar 2022: 30Apr 2022: 19May 2022: 17Jun 2022: 18Jul 2022: 25Aug 2022: 25Sep 2022: 15Oct 2022: 27Nov 2022: 24Dec 2022: 132023Jan 2023: 19Feb 2023: 16Mar 2023: 27Apr 2023: 23May 2023: 23Jun 2023: 17Jul 2023: 19Aug 2023: 14Sep 2023: 13Oct 2023: 15Nov 2023: 18Dec 2023: 162024Jan 2024: 20Feb 2024: 19Mar 2024: 19Apr 2024: 11May 2024: 14Jun 2024: 6Jul 2024: 24Aug 2024: 15Sep 2024: 10Oct 2024: 13Nov 2024: 12Dec 2024: 172025Jan 2025: 6Feb 2025: 12Mar 2025: 5Apr 2025: 4May 2025: 13Jun 2025: 10Jul 2025: 7Aug 2025: 4Sep 2025: 5Oct 2025: 3Nov 2025: 5Dec 2025: 112026Jan 2026: 2Feb 2026: 3Mar 2026: 1Apr 2026: 3May 2026: 1Jun 2026: 5Jul 2026: 2Aug 2026: 1

Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

By year received

01322642013: 1020132014: 642015: 13920152016: 1462017: 12420172018: 1552019: 17420192020: 2052021: 23920212022: 2642023: 22020232024: 1802025: 8520252026: 18

Event type and report source

Event type, as classified on the report

Death0%0
Injury1.4%28
Malfunction98.6%1,995
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%2,023
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 431,760 reports carrying product code NBW. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Display difficult to read1,18758.7%0.5%
No display/image41420.5%2%
Display or visual feedback problem1839%0.5%
Insufficient device problem information1125.5%0.8%
Application program problem: dose calculation error954.7%0.1%
Image display error/artifact452.2%0.6%
Incorrect software programming calculations402%0.1%
Improper device output130.6%0%
Defective component50.2%0.1%
Erratic or intermittent display50.2%0.1%
Communication or transmission problemthe device could not communicate or transmit40.2%0%
Incorrect, inadequate or imprecise result or readings40.2%5.6%
Melted40.2%0.2%
Key or button unresponsive/not working30.1%0%
Complete loss of power20.1%0%
Device displays incorrect message20.1%24%
Device operates differently than expectedthe device behaved unexpectedly20.1%4.4%
Failure to power up20.1%19.5%
Overheating of device20.1%0.1%
Volume accuracy problem20.1%0%

FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.

Patient problems coded

Patient problem (FDA code)ReportsShare
Hyperglycemiahigh blood sugar402%
Hypoglycemialow blood sugar190.9%
Aneurysm90.4%
Elevated ketones/ diabetic ketoacidosis30.1%
Coma10%
Headachehead pain10%
Loss of consciousnesspassing out10%
Vomitingbeing sick10%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureAccu-Chek Performa ComboProduct code NBWAll MAUDE reports
Reports2,023431,76026,136,888
Share of that pool—0.5%0%
Classified as death, per 1,000 reports009
Classified as injury1.4%8.8%36.2%
Classified as malfunction98.6%90.4%62.3%
Filed by the manufacturer100%99.3%94.9%

Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Other brands with product code NBW

BrandReportsLatest 12 monthsClassified as death
Ot Verio Iq Meter93,04100%
Ot Verio2 Meter45,29400%
Ot Ping Meter38,81700%
Ot Ultralink Meter26,21700%
Ot Verio Flex Meter13,50300%
Precision Xtra11,69660.1%
FreeStyle Lite12,2444300%
FreeStyle Freedom Lite11,0286940%
Neo Meter Optium FreeStyle10,6911320%
FreeStyle Precision Neo10,407350%
Ot Verio Pro Meter6,71600%
Ot Verio Test Strips6,35100%
One Touch Ultralink Meter5,99400%
Ot Ultra2 Meter5,14200%
Ot Ping Enhanced Meter5,08000%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."

Questions about Accu-Chek Performa Combo reports

How many FDA reports name Accu-Chek Performa Combo?

2,023 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 42 in the latest 12 months.

What kinds of events are reported?

malfunction (98.6%) and injury (1.4%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

display difficult to read (58.7%), no display/image (20.5%), display or visual feedback problem (9%), insufficient device problem information (5.5%) and application program problem: dose calculation error (4.7%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Accu-Chek Performa Combo was at fault?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."

How do I report a problem with a medical device?

Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.