GDF15 and cryohydrocytosis: After bivariate correlation analysis, the level of baseline MIC-1 was positively correlated with baseline ALT, AST, PIIINP, CIV, and HCV RNA in patients with type 1b CHC, negatively correlated with TP and ALB, but not correlated with TBIL, PLT, and age (P > 0.05).