To explore the possible causes or relevant factors of decreased TSH, the history of encephalopathy, biochemical markers (ALT, AST, ALB, LDH, Cr, UREA and cTnI), blood cell (WBC and LC) counts, inflammatory parameters (CRP, ferroprotein and PCT), and D dimer (D2D) levels were compared between the low and normal TSH groups. Here, CRP is linked to Encephalopathy.