A comparison of HA’s diagnostic utility with other COVID-19 biomarkers revealed that ROC AUC for HA was lower than those for inflammatory markers: IL-6 (0.863 vs. 0.992), CRP (0.863 vs. 0.998), PCT (0.863 vs. 0.966), and ferritin (0.863 vs. 0.922). Here, CRP is linked to COVID-19.