MAPT and Alzheimer disease: Measured by the DPV method, the sensor exhibited a dynamic range of 0.023 to 3.672 pg/mL with a very low detection limit (LOD) of 0.021 pg/mL, which is significantly lower than plasma tau concentration in the healthy population (~15.6 pg/mL) and AD patients (~53.9 pg/mL) [62].