Figure 1: Showing (a) Serum neopterin levels in healthy subjects (HC) and in those with different stages of chronic kidney disease (CKD). 𝑃 value are as follows: HC versus CKD III, 0.001; HC versus CKD IV, <0.0001; HC versus CKD V, 0.0001; CKD III versus CKD IV, 0.01; CKD III versus CKD V, 0.01 and CKD IV versus CKD V, 0.01, and (b) serum neopterin level in dialysis patients as compared to those nondialysis CKD patients ( 𝑃 < 0 . 0 0 1 ).