The sensor sits just under the skin and measures glucose levels in interstitial fluid. Readings are sent automatically to a compatible device, providing near real-time glucose information.

Routine finger-prick testing is generally reduced, but may still be required in certain situations, such as when symptoms do not match readings or during sensor warm-up periods, depending on the model and clinical advice.

The Dexcom ONE+ system features a simple, one-touch sensor applicator with a 30-minute warm up. This means there is no separate transmitter. It’s also 60% smaller than Dexcom ONE, so it’s even more discreet and offers a 12-hour grace period before a sensor must be changed.

Approved wear sites vary by model and user age. Only apply the sensor to areas recommended in the manufacturer’s instructions.

Dexcom sensors are designed to be water-resistant for everyday activities such as showering. Always check the specific product guidance for limitations.

Yes. When paired with a compatible device, the system can provide alerts for high or low glucose levels, helping users respond promptly.

Use should be based on individual clinical need. Always follow healthcare professional advice and the manufacturer’s instructions.

If readings do not match how you feel, follow the troubleshooting guidance provided and check with a healthcare professional if needed.