Medtronic MiniMed, Inc. 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 Recall
Hazard assessment based on recall description.
This AI-generated summary is provided for general informational purposes only and is derived from publicly available recall notices. It supplements but does not replace official agency classifications or safety instructions.
Check Your Product
According to the U.S. Food and Drug Administration (FDA)
Product
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
Brand
Medtronic MiniMed, Inc.
Lot Codes / Batch Numbers
REF/UDI-DI/Lot: MMT-7040A/20763000413389/HG72B2C, HG72CQQ, HG73VB7, HG73VC8, HG73VFT, HG73WFR, HG7441E, HG745F9, HG7486X, HG74AJ1, HG74SUR, HG74T9Q, HG74U36, HG78LMS, HG79Y9U, MMT-7040C1/00763000555276, 00763000413392, 20763000413396, 20763000555270, 20763000712475, 00763000712471/F1323, F1923, G0323, G1723, G2023, G2623, G2923, HG6RV7S, HG6TGNU, HG6TJ2Y, HG6TW97, HG6TWVU, HG6UNF2, HG6V8NN, HG6VB8S, HG6VNX3, HG6WNE1, HG6XFPR, HG6XH54, HG6XQCG, HG6XZJX, HG6Y0W1, HG6Y3QN, HG6YEK6, HG6YFAF, HG6YFHL, HG6YJAR, HG6YJBD, HG6YNGD, HG6Z7N5, HG6ZARN, HG7038Y, HG70CW5, HG70DAM, HG70JSU, HG70LRC, HG70QWA, HG71VMZ, HG72DB5, HG72G9C, HG72NV9, HG72R1P, HG72RBD, HG72SE3, HG72TPT, HG72TRV, HG72V3J, HG72ZFP, HG7340A, HG73EJX, HG73RNR, HG745SV, HG747E3, HG7480Q, HG749N6, HG74F93, HG75TSX, HG75XA1, HG76HFH, HG76RYY, MMT-7040C2/20763000555287/HG6RC39, HG6RXB5, HG6T4T7, HG6T8RV, HG6TJ2Y, HG6WKZU, HG6WLKS, HG6XFPR, HG6XH54, HG6XLSD, HG6XNH3, HG6Y5C6, HG6Z1X5, HG713AK, HG73EGX, HG73EJX, HG73FJP, HG73Q24, HG73QPM, HG73RNR, HG7619X, HG764J9, HG76CWC, HG77FMK, MMT-7040C3/20763000555294/HG6XNH3, HG73RNR, MMT-7040D1/00763000413484/HG6THY1, HG6V7VV, MMT-7040D2/00763000413491/HG6TL44, MMT-7040MA/20763000519692/HG74460, MMT-7040QC1/00763000555313, 20763000555317/HG6WT9A, HG6WUGE, HG73PH3, MMT-7040QC2/20763000555324, 763000555320/HG6WT9A, MMT-7040QC3/20763000555331/HG6WT9A
Products Sold
REF/UDI-DI/Lot: MMT-7040A/20763000413389/HG72B2C, HG72CQQ, HG73VB7, HG73VC8, HG73VFT, HG73WFR, HG7441E, HG745F9, HG7486X, HG74AJ1, HG74SUR, HG74T9Q, HG74U36, HG78LMS, HG79Y9U; MMT-7040C1/00763000555276, 00763000413392, 20763000413396, 20763000555270, 20763000712475, 00763000712471/F1323, F1923, G0323, G1723, G2023, G2623, G2923, HG6RV7S, HG6TGNU, HG6TJ2Y, HG6TW97, HG6TWVU, HG6UNF2, HG6V8NN, HG6VB8S, HG6VNX3, HG6WNE1, HG6XFPR, HG6XH54, HG6XQCG, HG6XZJX, HG6Y0W1, HG6Y3QN, HG6YEK6, HG6YFAF, HG6YFHL, HG6YJAR, HG6YJBD, HG6YNGD, HG6Z7N5, HG6ZARN, HG7038Y, HG70CW5, HG70DAM, HG70JSU, HG70LRC, HG70QWA, HG71VMZ, HG72DB5, HG72G9C, HG72NV9, HG72R1P, HG72RBD, HG72SE3, HG72TPT, HG72TRV, HG72V3J, HG72ZFP, HG7340A, HG73EJX, HG73RNR, HG745SV, HG747E3, HG7480Q, HG749N6, HG74F93, HG75TSX, HG75XA1, HG76HFH, HG76RYY; MMT-7040C2/20763000555287/HG6RC39, HG6RXB5, HG6T4T7, HG6T8RV, HG6TJ2Y, HG6WKZU, HG6WLKS, HG6XFPR, HG6XH54, HG6XLSD, HG6XNH3, HG6Y5C6, HG6Z1X5, HG713AK, HG73EGX, HG73EJX, HG73FJP, HG73Q24, HG73QPM, HG73RNR, HG7619X, HG764J9, HG76CWC, HG77FMK; MMT-7040C3/20763000555294/HG6XNH3, HG73RNR; MMT-7040D1/00763000413484/HG6THY1, HG6V7VV; MMT-7040D2/00763000413491/HG6TL44; MMT-7040MA/20763000519692/HG74460; MMT-7040QC1/00763000555313, 20763000555317/HG6WT9A, HG6WUGE, HG73PH3; MMT-7040QC2/20763000555324, 763000555320/HG6WT9A; MMT-7040QC3/20763000555331/HG6WT9A
Medtronic MiniMed, Inc. is recalling Guardian 4 Glucose Sensor, REF: MMT-7040A, MMT-7040C1, MMT-7040C2, MMT-7040C3, MMT-7040D1, MMT-7040D due to 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 impa. Based on FDA medical device recall database.
Summary derived from FDA notice
Reason for Recall
As stated by FDA
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.
Recommended Action
Per FDA guidance
On 11/15/23, recall notices were mailed or emailed to patients, distributors, and healthcare professionals who were told the following: 1) If you have affected devices discard and contact the firm to receive replacement sensors in the following ways: by completing the web form at medtronicdiabetes.com/G4S-form, contacting 24-Hour Technical Support at 800-646-4633, option 1, or email rs.customerexperience@medtronic.com. 2) If you cannot identify the LOT number of the sensor you are currently wearing, remove the sensor and replace your sensor with a non-impacted sensor. 3) Please complete and return the confirmation form via email to rs.safetyinformation@medtronic.com Distributors were asked to either 1) notify impacted customers using the Correction Letter and provide status updates to the recalling firm regarding customer responses, or 2) provide the recalling firm with customer addresses so they can notify impacted customers. If you have any questions, please contact the firm at 800-646-4633, option 1.
Verify this information on the official source
For complete details and official instructions, check the U.S. Food and Drug Administration (FDA) directly.
View official FDA recall noticePage updated: Jan 10, 2026