The purpose of the present invention is to provide: a method for predicting the prognosis for kidney disease for a subject on the basis of the amount of D- and L-amino acids, from a blood sample; and an analysis system that determines prognosis predictions. This purpose is achieved by using at least one amino acid to predict the prognosis for kidney disease, said amino acid being selected from the group consisting of D-serine, D-asparagine, D-proline, D-alanine, D-leucine, D-lysine, D-allo-isoleucine, L-glutamic acid, L-alanine, L-tryptophan, and L-asparagine.