CRP and COVID-19: Based on the findings presented in Table 2, it was observed that patients in the moderate and severe groups, who required hospitalization or were admitted to the ICU, had significantly higher serum levels of CRP (p < 0.001), D-Dimer (p < 0.001), Cr (p < 0.01), Urea (p < 0.01), and FBS (p < 0.01) compared to both the healthy group and the mild COVID-19 group.