A sensor beneath the surface
A CGM sensor sits just below the skin and measures glucose in interstitial fluid, the liquid around your cells. It does not sit inside a blood vessel. Glucose reaches the bloodstream before moving into this fluid, which helps explain why a sensor value and a fingerstick value may differ when glucose is changing.
From a measurement to a display
The sensor’s information is transmitted to the system’s supported display. Depending on the device, the display can show a current estimate, previous readings and the direction of change. Learning the screen, connection requirements and any available alerts is part of learning to use your particular CGM.
When readings do not match how you feel
If a reading is unexpected or does not match symptoms, use a blood glucose meter as directed by your care plan and device instructions. Keep a working meter and supplies available. Contact your healthcare professional with concerns about safe use, and seek urgent help for a medical emergency.
What to ask about NEX G
- How long is the warm-up for this model?
- Is the transmitter integrated, and how is the display connected?
- What does each on-screen symbol mean?
- When do the instructions require a meter check?
- How will I know that a session has ended?
The educational diagram above explains a general CGM principle. Request NEX G’s instructions for the exact operating sequence and system requirements.