Fig. 7.

Associations between significantly altered clinical parameters and potential metabolic biomarkers in COVID-19 patients from 78 samples at admission. *, P < 0.05; **, P < 0.01; ***, P < 0.001. Abbreviations: ALB, albumin; CHOL, total cholesterol; LDH, lactate dehydrogenase; HBDH, hydroxybutyrate dehydrogenase; GGT, gamma-glutamyl transpeptidase; CRP, C-reactive protein; PCT, procalcitonin; DB, direct bilirubin; PT, prothrombin time; INR, international normalized ratio. The values 0.2, 0.4 and 0.6 were the correlation coefficients represented by the right segments that were used as the reference rulers of the line thickness in this figure to evaluate the correlation coefficients.