Dialysis membrane evaluation

Patent Pending PROBLEM TO BE SOLVED: To provide a method of evaluating and determining a dialysis membrane, which is conventionally indirectly carried out by measuring TACBUN (time averaged concentration of blood urea nitrogen), by detecting and quantitatively determining kidney failure substances including uremia substances, oxidative stress causing substances, substances accumulating in an autosomal dominant polycystic kidney. SOLUTION: A dialysis membrane is evaluated by detecting or quantitatively determining kidney failure substances present in a test blood sample after hemodialysis.