Severity
Moderate
ModerateClass IIOngoing
FDA Devices recall · Reported February 14, 2024
Guardian 4 Glucose Sensor, REF: MMT-7040A, MMT-7040C1, MMT-7040C2, MMT-7040C3, MMT-7040D1, MMT-7040D2, MMT-7040MA, MMT-7040QC1, MMT-7040QC2, MMT-7040QC3
Some sensors may have a glucose oxidase (GOX) layer thickness outside of specification (5.5 to 9.2 ¿m). A non-conforming GOX layer thickness could impact sensor function (sensor g…
Compiled from official public sources by the editorial team.
Verify with FDA Devices →
Medtronic MiniMed, Inc. recalled Guardian 4 Glucose Sensor, REF: MMT-7040A, MMT-7040C1, MMT-7040C2, MMT-7040C3, MMT-7040D1… - a moderate-severity action.
Guardian 4 Glucose Sensor, REF: MMT-7040A, MMT-7040C1, MMT-7040C2, MMT-7040C3, MMT-7040D1… was recalled by Medtronic MiniMed, Inc. in February 14, 2024. Reason: Some sensors may have a glucose oxidase (GOX) layer thickness outside of specification (5.5 to 9.2 ¿m). A non…. Check the official notice for the remedy. Verify recall #Z-1005-2024 with the FDA Devices before acting.
The recall
Medtronic MiniMed, Inc. issued this moderate-severity FDA Devices recall — Some sensors may have a glucose oxidase (GOX) layer thickness outside of specification (5.5 to 9.2 ¿m). A non….
- Moderate
- severity level
- 115K units
- affected scope
- Class II
- classification
- February 14, 2024
- reported
Sourced from official FDA Devices enforcement records. Verify recall #Z-1005-2024 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.
Recall Insight
This FDA Devices action (record #Z-1005-2024) was formally reported on February 14, 2024, with the manufacturer initiating the action on November 15, 2023. It is classified under Moderate severity (Class II), with a current status of Ongoing. Medtronic MiniMed, Inc. is listed as the recalling firm, operating out of Northridge, CA. Federal records list the affected scope as 114,758, a scale large enough to require multi-state distribution tracking.
The documented reason for this recall is: Some sensors may have a glucose oxidase (GOX) layer thickness outside of specification (5.5 to 9.2 ¿m). A non-conforming GOX layer thickness could impact sensor function (sensor glucose value) or loss of sensor function… Distribution data in the federal record shows the product reached: Worldwide - US Nationwide distribution including in the states of PR, AK, AL, AR, AZ, CA, CO, CT, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, S…. Distribution scope directly affects the consumer exposure window and determines whether a recall remains regional or escalates into a nationwide advisory.
Within the same product category the archive holds 6 closely related recalls, 6 from FDA Devices — clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.
Medical Devices recalls over time
Where this recall sits in its category — 40,409 medical devices recalls on record
Where this recall sits in the database
Of 100,165 recalls in the database, 23,668 are high severity, 72,097 moderate, and 4,400 low. This recall is classified moderate severity.
Counts reflect market size and reporting activity, not inherent danger, we do not rank products by risk from raw recall volume.
Affected scope
114,758
Related Recalls
6
6 from same agency
Product description
Guardian 4 Glucose Sensor, REF: MMT-7040A, MMT-7040C1, MMT-7040C2, MMT-7040C3, MMT-7040D1, MMT-7040D2, MMT-7040MA, MMT-7040QC1, MMT-7040QC2, MMT-7040QC3
Reason for recall
Some sensors may have a glucose oxidase (GOX) layer thickness outside of specification (5.5 to 9.2 ¿m). A non-conforming GOX layer thickness could impact sensor function (sensor glucose value) or loss of sensor function due to the sensor layer being too thin. The potential impact resulting from this issue ranges from user inconvenience to over/under delivery of insulin, possibly resulting in hyperglycemia or hypoglycemia, if the sensor glucose values are affected. The issue was identified by the manufacturing team during the execution of Filmetrics Measurement for a Guardian Sensor lot.
Recall Profile
| Attribute | Value |
|---|---|
| Agency | U.S. Food and Drug Administration |
| Severity class | Moderate (Class II) |
| Status | Ongoing |
| Recall number | Z-1005-2024 |
| Date reported | February 14, 2024 |
| Date initiated | November 15, 2023 |
| Recalling firm | Medtronic MiniMed, Inc. |
| Firm location | Northridge, CA |
| Affected scope | 114,758 |
| Distribution | Worldwide - US Nationwide distribution including in the states of PR, AK, AL, AR, AZ, CA, CO, CT, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, V… |
Profile values are sourced directly from the official FDA Devices enforcement record. Source: U.S. Food and Drug Administration.
What to do with this recall
Match your product against the recall record, then act on the agency remedy.
- Check the recall number (Z-1005-2024) and product description against the item you own. Search the archive
- Confirm the current status with FDA Devices before acting — recall details can be updated.
- Follow the documented remedy (refund, replacement, repair, or disposal) rather than general advice. What to do next
This page summarizes the official FDA Devices record for research and awareness; it is not legal, medical, or safety advice. Verify with the issuing agency before acting.
Frequently Asked Questions
What product was recalled? ▼
Guardian 4 Glucose Sensor, REF: MMT-7040A, MMT-7040C1, MMT-7040C2, MMT-7040C3, MMT-7040D1, MMT-7040D2, MMT-7040MA, MMT-7040QC1, MMT-7040QC2, MMT-7040QC3. Recalled by Medtronic MiniMed, Inc.. Units affected: 114,758.
Why was this product recalled? ▼
Some sensors may have a glucose oxidase (GOX) layer thickness outside of specification (5.5 to 9.2 ¿m). A non-conforming GOX layer thickness could impact sensor function (sensor glucose value) or loss of sensor function due to the sensor layer being too thin. The potential impact resulting from this issue ranges from user inconvenience to over/under delivery of insulin, possibly resulting in hyperglycemia or hypoglycemia, if the sensor glucose values are affected. The issue was identified by the manufacturing team during the execution of Filmetrics Measurement for a Guardian Sensor lot.
Which agency issued this recall? ▼
This recall was issued by the FDA Devices on February 14, 2024. Severity: Moderate. Recall number: Z-1005-2024.
Where was the recalled product distributed? ▼
Distribution: Worldwide - US Nationwide distribution including in the states of PR, AK, AL, AR, AZ, CA, CO, CT, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, WA, WI, WV, WY and the countries of Austria, Belgium, Canary Islands, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, India, Ireland, Israel, Italy, Kazakhstan, Kuwait, Liechtenstein, Luxembourg, Netherlands, Northern Ireland, Norway, Poland, Portugal, Romania, Saudi Arabia, Slovenia, Spain, Sweden, Switzerland, United Kingdom..
How do I check if my product is affected by a recall? ▼
Check the product description and recall number (Z-1005-2024) against your product. Visit the official FDA Devices website for the most current information. You can also use our Recall Checker tool to search by product name or brand.
Should I stop using a recalled medication or medical device? ▼
Do not stop using a recalled medication or device without consulting your healthcare provider first, as abruptly discontinuing treatment could pose its own health risks. Your doctor can advise on alternatives or whether the recall applies to your specific product lot. Check the recall number and lot information against your product packaging.
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Data Sources
Source: FDA, CPSC, and NHTSA federal recall databases. This recall: FDA Devices, reported February 14, 2024.
- Source: FDA — Food and Drug Administration, openFDA Enforcement API (food, drug, and medical device recalls)
- Source: CPSC — Consumer Product Safety Commission Recalls API (consumer product recalls and hazards)
- Source: NHTSA — National Highway Traffic Safety Administration Recalls API (vehicle safety recalls)
Recall information is sourced from official federal agency databases. Always verify recall details with the issuing agency for the most current status. This information is for research and awareness purposes only.
Every figure on PlainRecalls is rendered directly from official FDA, CPSC and NHTSA recall records, no number is typed in by an editor. Severity classes follow each agency's own taxonomy (FDA Class I/II/III; CPSC and NHTSA by hazard type), and related-recall context is computed across the full archive. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.