SiBionics is a Chinese medical company that makes continuous glucose monitors for glucose tracking. Its GS range uses an adhesive sensor on the upper arm, with readings sent to a mobile app for fourteen days.

How it works
A flexible filament sits just beneath the skin in fluid around cells. An enzyme reacts with glucose and produces an electrical signal that changes with glucose. A transmitter sends readings to the app, which displays values, trends, alerts and reports that can be shared.

Key considerations
Interstitial glucose can lag behind blood glucose when levels change quickly. Pressure on the sensor, poor adhesion, medication and sensor error can affect readings. Each sensor is disposable, creating recurring cost and waste. Product approval, alerts and app compatibility vary by country. Symptoms that disagree with a reading require confirmation using the instructions for the specific medical device.