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Garmin Patents Detail Non-Invasive HbA1c Estimation From Wearable Light Sensors

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Sig1.85Sen+2.25Env0.00Soc+1.10Gov+0.35

Garmin patent filings describe research into non-invasive HbA1c estimation using optical sensors in a wrist-worn device. The approach would send multiple wavelengths of light through skin and analyze pulse spectroscopy signals to estimate glycated hemoglobin. The work targets HbA1c rather than continuous glucose readings, amid competitive pressure from Apple and other smartwatch makers.

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