Systems and methods for analyzing spent dialysate

A system comprising:

• a light-permeable chamber removably disposed along a dialysate drain line and configured to receive a portion of spent dialysate passing through the dialysate drain line;
• a light-sensing device operatively coupled with the light-permeable chamber and configured to measure light transmittance through the portion of spent dialysate in the light-permeable chamber;
• and
• one or more non-transitory computer-readable media storing instructions that, when executed by one or more processors, cause a dialysate analysis device to measure turbidity of the portion of spent dialysate based at least on the light transmittance.