Dexcom G7 stolen-sensor recall: how to check your lot number and what to do now

If you use Dexcom G7 sensors, check your box now. The FDA posted a Dexcom safety notice on May 29, 2026, after Dexcom said two lots of G7 sensors that had been marked as scrap and intended for destruction were stolen and then sold by third parties.

The affected lot numbers are 1725204004 and 1725069002. According to the FDA-posted notice, the two lots do not carry the same risk. One lot may raise the risk of skin infection because the sensors may not have been properly sterilized. The other had an elevated internal testing failure rate, which raises the risk of having no sensor readings available. Dexcom said there had been no reported severe adverse events when the FDA posted the notice.

What happened

Dexcom announced the issue on May 26, 2026, and the FDA posted the company announcement three days later. Dexcom said the sensors were supposed to be destroyed as part of routine quality control, but two lots were stolen during that process and later sold into the market by third parties.

The company told the FDA it traced sales back to Pharmsource, LLC, which it identified as an unauthorized Dexcom distributor that supplies some independent pharmacies and durable medical equipment distributors in the United States. Dexcom also said sensors that came through its authorized U.S. distributors were not affected.

The two affected lot numbers and the different risks

Lot 1725204004: possible increased risk of skin infection because the sensors may not have been properly sterilized.
Lot 1725069002: possible increased risk of having no sensor readings available because the lot had an elevated internal testing failure rate.

That distinction matters. For many people with diabetes, continuous glucose monitor data help with everyday treatment decisions, including spotting highs, lows, and time in range. Missing or unreliable readings can create a safety problem of their own.

How to check whether your Dexcom G7 is affected

Compare your product’s lot number with the two lot numbers above. If you still have the outer box, start there. Dexcom also directs users to its theft-check tool and says affected U.S. users can contact customer support for replacement help.

If you cannot find the lot number, do not guess. Contact Dexcom support and your pharmacy or device supplier so they can help verify what you received.

What to do right now

If the sensor is unopened and the lot number matches: do not use it. Dexcom says affected users should contact customer support for a replacement.
If the sensor is already in use and the lot number matches: Dexcom says users should not use sensors from the affected lots. Until you get clear next-step instructions and replacement help, use your backup blood glucose meter if readings are missing, unavailable, or do not match how you feel.
If you already used a sensor from lot 1725204004: watch the insertion site for signs of skin infection over the next several days.
If you already used a sensor from lot 1725069002: pay close attention to missing readings or readings that do not make sense for your symptoms, and confirm with a meter when needed.

If you depend on CGM alarms or continuous data to help manage insulin, and you are unsure how to switch back to backup monitoring, contact your diabetes care team. If you are short on test strips, a working meter, or other backup supplies, contact your clinic, pharmacist, or health plan promptly. Coverage and refill rules can vary.

Why backup fingerstick monitoring matters

The CDC notes that CGMs measure glucose in interstitial fluid, not directly in the blood. That means CGM readings can differ from fingerstick meter readings. The CDC says people using CGMs may still need to do fingersticks sometimes to make sure the device is accurate, especially when readings are unexpected or unavailable.

The American Diabetes Association explains that CGM data help show time in range, including how often glucose is in target, high, or low. That fuller picture can be lost if a sensor is not working properly.

Skin infection signs to watch for after lot 1725204004

If you used a sensor from lot 1725204004, look beyond mild adhesive irritation. MedlinePlus lists common warning signs of skin infection such as redness, swelling, pain, pus, rash, and itching. Cellulitis warning signs can also include warmth, spreading redness, drainage, fever, chills, or feeling unusually unwell.

Contact a clinician promptly if you notice those symptoms. Seek urgent care sooner if the redness is spreading, drainage is increasing, or fever or chills develop.

High blood sugar symptoms and urgent red flags if readings are missing

If you lose sensor readings, watch for symptoms of high blood sugar such as feeling very thirsty, urinating often, fatigue or weakness, headache, and blurred vision. Those symptoms do not prove an emergency, but they are a reason to check your glucose with a backup meter if you can.

Get urgent or emergency help if you have very high glucose or suspected high glucose along with nausea or vomiting, belly pain, trouble breathing, confusion, unusual sleepiness, or ketones. Severe hyperglycemia and diabetic ketoacidosis can be dangerous and may require hospital care.

Where to get replacements and what remains unclear

The FDA notice says affected U.S. users can call Dexcom Customer Support at 1-844-478-1600 to request replacements. Dexcom also says authorized U.S. distributors were not affected.

What remains unclear is how many affected sensors ultimately reached patients and how quickly replacements will arrive. The public notice also does not say how many people may have already used an affected sensor before the theft was discovered.

For now, the most practical next step is simple: check the lot number, do not use an affected unopened sensor, use backup glucose monitoring if readings are missing or questionable, and contact Dexcom if you think you have one of the affected lots.

Sources

Editorial note: Weence articles are researched from cited public-health, medical, regulatory, journal, and reputable news sources and may be drafted with AI assistance. They are checked for source support, clarity, and safety guardrails before publication.

This article is for general informational purposes only and is not medical advice. Research findings can be early or incomplete, and health guidance can change. Always talk with a qualified healthcare professional about personal symptoms, diagnosis, medications, vaccines, screenings, or treatment decisions. If you think you may have a medical emergency, call emergency services right away.