Healthcare worker preparing a fingerstick blood sample for a rapid factor IX level test in hemophilia B gene therapy monitoring with a blurred hospital setting.

Continuous Glucose Monitoring (CGM) hardware consists of three main components: a sensor, a transmitter, and a receiver or display device. The sensor, inserted just under the skin, measures glucose levels in interstitial fluid using an enzyme-coated electrode. The transmitter, attached to the sensor, wirelessly sends glucose data to a receiver, smartphone, or insulin pump. The receiver or app displays real-time glucose readings, trends, and alerts for highs or lows. Modern CGM systems feature mi

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Nurse checking girl's blood glucose level using a fingerstick glucose meter.