IL6 and COVID-19: On the other hand, values of C-reactive protein, IL-6, and other biochemical factors such as lactate dehydrogenase, aspartate aminotransferase, and alanine aminotransferase exhibited high specificity against COVID-19 (Cheng et al., 2020; Kermali et al., 2020; Rasmi et al., 2021) (Table 1).