Devices › Sensor, glucose, invasive
Device brand name · Mds
G4 Platinum Continuous Glucose Monitoring System: medical device reports filed with FDA
48,906 reports name it, 2013–2015. Manufacturer given most often on reports: Dexcom. Product code MDS.
- 48,906
- device reports naming the brand
- 0.2% of all MAUDE reports · about 3,625 a year
- 0
- reports, 12 months to August 2026
- 0 in the 12 months before
- 98.3%
- classified as malfunction
- 94.9% across the product code
- 0.1%
- classified as death, as reported
- 30 reports · not verified by FDA
FDA's MAUDE database holds 48,906 reports that name the brand "G4 Platinum Continuous Glucose Monitoring System" (mds), received between January 2013 and December 2015; the manufacturer given most often on reports is Dexcom. 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 malfunction (98.3%), injury (1.6%) and death (0.1%); across all sensor, glucose, invasive reports (product code MDS) death is recorded in 0.1% and malfunction in 94.9%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are device operates differently than expected (86.7%), device displays incorrect message (13.6%) and component missing (3.2%). The patient problems coded most often are hypoglycemia, skin irritation and rash. 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
No report naming G4 Platinum Continuous Glucose Monitoring System was received in the five years to August 2026; the latest was received in December 2015.
By year received
Event type and report source
Event type, as classified on the report
Who filed the report
Grey bar: all 282,102 reports carrying product code MDS. 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 |
|---|---|---|---|
| Device operates differently than expectedthe device behaved unexpectedly | 42,415 | 86.7% | 28.7% |
| Device displays incorrect message | 6,663 | 13.6% | 20.4% |
| Component missing | 1,554 | 3.2% | 1.1% |
| Detachment of device component | 1,044 | 2.1% | 1.1% |
| No audible alarm | 683 | 1.4% | 4.3% |
| Defective alarm | 621 | 1.3% | 2.5% |
| Wireless communication problema wireless connection problem | 288 | 0.6% | 21.3% |
| Breakthe device broke | 212 | 0.4% | 0.8% |
| Incorrect, inadequate or imprecise result or readings | 80 | 0.2% | 0.6% |
| Detachment of device or device componentpart of the device came off | 73 | 0.1% | 0.1% |
| Incorrect or inadequate test results | 40 | 0.1% | 0.2% |
| Communication or transmission problemthe device could not communicate or transmit | 29 | 0.1% | 2.7% |
| Device stops intermittentlythe device stopped now and then | 24 | 0% | 0.1% |
| False reading from device non-compliance | 19 | 0% | 0% |
| Loss of or failure to bond | 19 | 0% | 0% |
| Device issuea problem with the device | 15 | 0% | 0% |
| Overheating of device | 15 | 0% | 0.1% |
| Failure to power up | 14 | 0% | 0.2% |
| Patient-device incompatibilitythe device did not suit the patient | 13 | 0% | 0.1% |
| Device sensing problem | 10 | 0% | 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 | 341 | 0.7% |
| Skin irritationirritated skin | 206 | 0.4% |
| Rashskin rash | 198 | 0.4% |
| Loss of consciousnesspassing out | 124 | 0.3% |
| Itching sensation | 73 | 0.1% |
| Discomfortdiscomfort | 50 | 0.1% |
| Painpain, site not specified | 50 | 0.1% |
| Hyperglycemiahigh blood sugar | 48 | 0.1% |
| Scarring | 35 | 0.1% |
| Deaththe patient died; cause not stated by this term | 33 | 0.1% |
| Bruise/contusion | 27 | 0.1% |
| Seizures | 27 | 0.1% |
| Foreign body in patientpart of a device left in the patient | 26 | 0.1% |
| Blood loss | 24 | 0% |
| Injurya physical injury | 21 | 0% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | G4 Platinum Continuous Glucose Monitoring System | Product code MDS | All MAUDE reports |
|---|---|---|---|
| Reports | 48,906 | 282,102 | 26,136,888 |
| Share of that pool | — | 17.3% | 0.2% |
| Classified as death, per 1,000 reports | 1 | 1 | 9 |
| Classified as injury | 1.6% | 4.8% | 36.2% |
| Classified as malfunction | 98.3% | 94.9% | 62.3% |
| Filed by the manufacturer | 100% | 99.6% | 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 MDS
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| Dexcom G5 Mobile Continuous Glucose Monitoring System | 332,492 | 6 | 0% |
| Dexcom G4 Platinum Continuous Glucose Monitoring System | 53,681 | 0 | 0.1% |
| Dexcom G4 Platinum Continuous Glucose Monitoring System Dexcom Share System | 17,717 | 0 | 0.1% |
| Xmtr MMT-7811NA GST3C Lockout | 17,012 | 65 | 0% |
| Animas Vibe | 88,703 | 0 | 0% |
| Paradigm Real-Time Insulin Infusion Pump | 126,282 | 0 | 0.3% |
| Unknown XMTR | 4,431 | 2,027 | 0% |
| Carelink Personal Mmt-7333 | 3,680 | 233 | 0% |
| Guardian Link 3 OUS | 6,663 | 733 | 0% |
| Ni | 32,939 | 1,587 | 1.8% |
| Dexcom G4 Platinum Continuous Monitoring System Dexcom Share System | 2,293 | 0 | 0.3% |
| Paradigm Real-Time Revel Insulin Infusion Pump | 178,691 | 0 | 0.6% |
| Transmitter Mmt-7841zw Gst5g Ous | 31,572 | 12,351 | 0% |
| Xmtr Mmt-7821lna Gst4c Replacement | 1,685 | 13 | 0% |
| Gst4c Ous | 1,637 | 2 | 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 G4 Platinum Continuous Glucose Monitoring System reports
How many FDA reports name G4 Platinum Continuous Glucose Monitoring System?
48,906 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?
malfunction (98.3%), injury (1.6%) and death (0.1%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
device operates differently than expected (86.7%), device displays incorrect message (13.6%), component missing (3.2%), detachment of device component (2.1%) and no audible alarm (1.4%). 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 G4 Platinum Continuous 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.