In this study, the electrical conductivity of a small sample of simulated plasma was measured by a microfluidic chip with electrodes. Saline samples of different concentrations were evaluated based on saline (0.9 w/v% NaCl solution). The electrical conductivity of samples of saline with albumin was also measured. In order to investigate whether the differences in conductivity were due to viscosity following Walden’s law, we correlated the electrical conductivity with the viscosity evaluated by the capillary method.