In model 3, continuous RDW (OR = 1.09 [1.04–1.13], p < 0.001) and RAR (OR = 1.31 [1.16–1.47], p < 0.001) remained positively correlated with kidney stone prevalence, whereas continuous albumin (OR = 0.71 [0.59–0.87], p < 0.001) exhibited the opposite association. This evidence concerns the gene ALB and nephrolithiasis.