Also, ROC curve showed that an elevated level of IL-6 greater than 48.3 pg/ml predicted poor clinical outcomes in COVID-19 patients with higher probability of disease progression and severe complications (AUC = 0.653, 95% CI = 0.542 to 0.753, p = 0.0117 with a sensitivity of 55.26%, specificity of 72.34%, PPV of 61.0853%, NPV of 67.2975%). Here, IL6 is linked to COVID-19.