Dexcom G6 CGM Sensors & Transmitters

For people managing diabetes, the difference between a fingerstick number and a full-day picture of glucose trends is enormous. Dexcom continuous glucose monitoring (CGM) does away with routine fingersticks by reading glucose levels every five minutes and sending them straight to a receiver or smartphone. This collection carries the core components that keep a Dexcom G6 system running: the Dexcom G6 Glucose Sensor (08627005303) and the Dexcom G6 Transmitter (08627001601).

The two pieces work together. The sensor is a small, water-resistant wire inserted just under the skin with a one-touch applicator; it stays in place and reads glucose for up to 10 days. The reusable transmitter snaps onto the sensor and wirelessly relays readings to your display device, lasting roughly three months before it needs replacing. Because the G6 is factory-calibrated, most users never need to calibrate with a fingerstick, and the system supports customizable high and low alerts—including an Urgent Low Soon warning that can flag a drop before it happens.

A common question at reorder time is what to buy and when. Sensors are consumables replaced every 10 days, so they're the item you'll purchase most often; the transmitter is bought far less frequently. If you're setting up a new system, you'll need both components plus a compatible receiver or the Dexcom app on a supported phone. Keeping a spare sensor on hand prevents any gap in monitoring during a changeover.

Dexcom G6 data can also be shared with caregivers and clinicians, making it a practical choice for parents managing a child's diabetes or anyone coordinating care remotely.

Explore related supplies in our Blood Glucose Monitoring collection, or browse the broader Diabetes Care category for lancets, test strips, and insulin delivery accessories.