Devices › System, test, blood glucose, over the counter
Device brand name · Glucose monitoring sys/kit
Unknown Meter: medical device reports filed with FDA
177 reports name it, 2008–2024. Manufacturer given most often on reports: Lifescan. Product code NBW.
- 177
- device reports naming the brand
- 0% of all MAUDE reports · about 10 a year
- 0
- reports, 12 months to August 2026
- 0 in the 12 months before
- 1.7%
- 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 177 reports that name the brand "Unknown Meter" (glucose monitoring sys/kit), received between March 2008 and May 2024; the manufacturer given most often on reports is Lifescan. Spellings of one product vary from report to report.
0 reports arrived in the 12 months to August 2026, and none 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 injury (95.5%) and malfunction (1.7%); 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 incorrect or inadequate test results (19.2%), failure to power up (9.6%) and insufficient device problem information (9.6%). The patient problems coded most often are hypoglycemia, shaking/tremors and sweating. 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
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
Event type and report source
Event type, as classified on the report
Who filed the report
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) | Reports | Share | Share across product code |
|---|---|---|---|
| Incorrect or inadequate test results | 34 | 19.2% | 9.2% |
| Failure to power up | 17 | 9.6% | 19.5% |
| Insufficient device problem information | 17 | 9.6% | 0.8% |
| High test results | 15 | 8.5% | 6.2% |
| Device displays incorrect message | 7 | 4% | 24% |
| Unable to obtain readings | 7 | 4% | 0.6% |
| Device operates differently than expectedthe device behaved unexpectedly | 6 | 3.4% | 4.4% |
| Low test results | 6 | 3.4% | 2.5% |
| Incorrect, inadequate or imprecise result or readings | 4 | 2.3% | 5.6% |
| Loss of powerthe device lost power | 3 | 1.7% | 3.5% |
| Breakthe device broke | 2 | 1.1% | 0.4% |
| Device inoperablethe device could not be used | 2 | 1.1% | 0.5% |
| Crackthe device cracked | 1 | 0.6% | 0.8% |
| Defective component | 1 | 0.6% | 0.1% |
| False reading from device non-compliance | 1 | 0.6% | 1.1% |
| Inappropriate audible prompt/feedback | 1 | 0.6% | 0.5% |
| Power problem | 1 | 0.6% | 0.1% |
| Shelf life exceeded | 1 | 0.6% | 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) | Reports | Share |
|---|---|---|
| Hypoglycemialow blood sugar | 34 | 19.2% |
| Shaking/tremors | 30 | 16.9% |
| Sweating | 22 | 12.4% |
| Hyperglycemiahigh blood sugar | 17 | 9.6% |
| Loss of consciousnesspassing out | 14 | 7.9% |
| Dizzinesslight-headedness or unsteadiness | 12 | 6.8% |
| Blurred vision | 9 | 5.1% |
| Coma | 7 | 4% |
| Injurya physical injury | 6 | 3.4% |
| Polydipsia | 6 | 3.4% |
| Overdosea dose above the recommended amount | 5 | 2.8% |
| Confusion/ disorientation | 4 | 2.3% |
| Fainting | 4 | 2.3% |
| Fatiguetiredness | 4 | 2.3% |
| Weakness | 4 | 2.3% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | Unknown Meter | Product code NBW | All MAUDE reports |
|---|---|---|---|
| Reports | 177 | 431,760 | 26,136,888 |
| Share of that pool | — | 0% | 0% |
| Classified as death, per 1,000 reports | 0 | 0 | 9 |
| Classified as injury | 95.5% | 8.8% | 36.2% |
| Classified as malfunction | 1.7% | 90.4% | 62.3% |
| Filed by the manufacturer | 91.5% | 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
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| Ot Verio Iq Meter | 93,041 | 0 | 0% |
| Ot Verio2 Meter | 45,294 | 0 | 0% |
| Ot Ping Meter | 38,817 | 0 | 0% |
| Ot Ultralink Meter | 26,217 | 0 | 0% |
| Ot Verio Flex Meter | 13,503 | 0 | 0% |
| Precision Xtra | 11,696 | 6 | 0.1% |
| FreeStyle Lite | 12,244 | 430 | 0% |
| FreeStyle Freedom Lite | 11,028 | 694 | 0% |
| Neo Meter Optium FreeStyle | 10,691 | 132 | 0% |
| FreeStyle Precision Neo | 10,407 | 35 | 0% |
| Ot Verio Pro Meter | 6,716 | 0 | 0% |
| Ot Verio Test Strips | 6,351 | 0 | 0% |
| One Touch Ultralink Meter | 5,994 | 0 | 0% |
| Ot Ultra2 Meter | 5,142 | 0 | 0% |
| Ot Ping Enhanced Meter | 5,080 | 0 | 0% |
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 Unknown Meter reports
How many FDA reports name Unknown Meter?
177 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 0 in the latest 12 months.
What kinds of events are reported?
injury (95.5%) and malfunction (1.7%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
incorrect or inadequate test results (19.2%), failure to power up (9.6%), insufficient device problem information (9.6%), high test results (8.5%) and device displays incorrect message (4%). These are FDA's device problem codes as entered on the report.
Who files these reports?
manufacturer reports (91.5%) and distributor reports (8.5%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.
Do these reports show that Unknown Meter 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.