Validity of the IDRO sweat lactate sensor

Since measuring lactate in sweat with wearable sensor is a new concept, the validity of this method has to be compared with the gold standard to measure lactate in sweat. In the scientific paper of Xuan et al (https://pubs.acs.org/doi/full/10.1021/acssensors.1c01009) the IDRO sweat lactate measurments are compared with the lactate values of collected samples analysed with ion chromotography (IC).

Picture from https://pubs.acs.org/doi/full/10.1021/acssensors.1c01403

As can be seen in the table below, the differences between the sensor and IC lactate values are low, ranging from 1.7% to 11.7%. This indicates a high validity of the IDRO sensor with the gold standard.