RF-based approaches have the problem that they are not specific to glucose. A molecule of glucose absorbs infrared light at specific wavelengths due to its size and types of bonds. It does not have specific absorption of radio frequencies. In this paper, researchers measured glucose in pure water at concentrations 100X physiological levels. I'd like to see this work with whole blood or a tissue phantom, or measure glucose independently from any other solute.
RF-based approaches have the problem that they are not specific to glucose. A molecule of glucose absorbs infrared light at specific wavelengths due to its size and types of bonds. It does not have specific absorption of radio frequencies. In this paper, researchers measured glucose in pure water at concentrations 100X physiological levels. I'd like to see this work with whole blood or a tissue phantom, or measure glucose independently from any other solute.