Reported Reactions

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

Device brand name · Glucometer

Dario Blood Glucose Monitoring System: medical device reports filed with FDA

534 reports name it, 2017–2026. Product code NBW.

534
device reports naming the brand
0% of all MAUDE reports · about 59 a year
112
reports, 12 months to August 2026
87 in the 12 months before
91.8%
classified as malfunction
90.4% across the product code
0.4%
classified as death, as reported
2 reports · not verified by FDA

FDA's MAUDE database holds 534 reports that name the brand "Dario Blood Glucose Monitoring System" (glucometer), received between June 2017 and August 2026. Spellings of one product vary from report to report.

112 reports arrived in the 12 months to August 2026, up 29% from 87 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 (91.8%), injury (7.9%) and death (0.4%); 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 incorrect, inadequate or imprecise result or readings (83.1%), high readings (75.8%) and low readings (9.4%). The patient problems coded most often are hyperglycemia, hypoglycemia and shaking/tremors. 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

01019Sep 2021: 5Oct 2021: 1Nov 2021: 1Dec 2021: 32022Jan 2022: 0Feb 2022: 5Mar 2022: 2Apr 2022: 0May 2022: 1Jun 2022: 1Jul 2022: 1Aug 2022: 3Sep 2022: 5Oct 2022: 5Nov 2022: 7Dec 2022: 22023Jan 2023: 9Feb 2023: 1Mar 2023: 7Apr 2023: 7May 2023: 4Jun 2023: 2Jul 2023: 7Aug 2023: 12Sep 2023: 13Oct 2023: 7Nov 2023: 19Dec 2023: 142024Jan 2024: 12Feb 2024: 7Mar 2024: 11Apr 2024: 9May 2024: 6Jun 2024: 7Jul 2024: 6Aug 2024: 5Sep 2024: 7Oct 2024: 3Nov 2024: 7Dec 2024: 42025Jan 2025: 9Feb 2025: 4Mar 2025: 8Apr 2025: 5May 2025: 8Jun 2025: 9Jul 2025: 9Aug 2025: 14Sep 2025: 19Oct 2025: 14Nov 2025: 8Dec 2025: 52026Jan 2026: 4Feb 2026: 15Mar 2026: 7Apr 2026: 9May 2026: 12Jun 2026: 4Jul 2026: 10Aug 2026: 5

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

0561122017: 420172018: 2320182019: 4520192020: 3220202021: 3420212022: 3220222023: 10220232024: 8420242025: 11220252026: 662026

Event type and report source

Event type, as classified on the report

Death0.4%2
Injury7.9%42
Malfunction91.8%490
Other0%0
Not given0%0

Who filed the report

Manufacturer report99.8%533
Voluntary report0.2%1
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
Incorrect, inadequate or imprecise result or readings44483.1%5.6%
High readingsreadings were too high40575.8%1.1%
Low readingsreadings were too low509.4%0.3%
High test results61.1%6.2%
Low test results20.4%2.5%
Data problem10.2%0.1%
Device displays incorrect message10.2%24%
Improper or incorrect procedure or method10.2%0.4%
Moisture or humidity problem10.2%0%
No device output10.2%0.1%
Output problem10.2%0.2%

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 sugar34063.7%
Hypoglycemialow blood sugar9718.2%
Shaking/tremors152.8%
Confusion/ disorientation61.1%
Blurred vision50.9%
Sweating50.9%
Shock, insulin40.7%
Dizzinesslight-headedness or unsteadiness30.6%
Hot flashes/flushes30.6%
Convulsion/seizure20.4%
Deaththe patient died; cause not stated by this term20.4%
Headachehead pain20.4%
Syncope/fainting20.4%
Appropriate clinical signs, symptoms and conditions term/code not available10.2%
Chillschills or shivering10.2%

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

In context

MeasureDario Blood Glucose Monitoring SystemProduct code NBWAll MAUDE reports
Reports534431,76026,136,888
Share of that pool—0.1%0%
Classified as death, per 1,000 reports409
Classified as injury7.9%8.8%36.2%
Classified as malfunction91.8%90.4%62.3%
Filed by the manufacturer99.8%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 Dario Blood Glucose Monitoring System reports

How many FDA reports name Dario Blood Glucose Monitoring System?

534 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 112 in the latest 12 months.

What kinds of events are reported?

malfunction (91.8%), injury (7.9%) and death (0.4%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

incorrect, inadequate or imprecise result or readings (83.1%), high readings (75.8%), low readings (9.4%), high test results (1.1%) and low test results (0.4%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (99.8%) and voluntary reports (0.2%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Dario Blood Glucose Monitoring System 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.