The group of NIE Zedong proposes a blood glucose detection method based on the measurement impedance differences of blood volume. Their results showed that as glucose concentration increased, the conductivity of aqueous solutions decreased when the frequency of RF signal was below 1 MHz. However, the relative permittivity was almost insensitive to glucose concentration. Simulation results of an arm model showed that as the glucose concentration increased, the bioimpedance difference of blood volume decreased. This was supported by both in vitro and in vivo experimentsand may be further developed into a non-invasive blood glucose measurement.

CAS news release, August 24, 2018