GDF15 and infection: However, there were significant differences in GDF-15 serum levels, WBC counts, triglyceride (TG), total cholesterol (TCHL), low cholesterol (LCHL), and glucose (GLU), which are related to infection and metabolism (p < 0.001, p < 0.001, p = 0.003, p = 0.014, p = 0.022, and p < 0.001, respectively).