Among routine clinical laboratory parameters, CRP, procalcitonin, IL-6, D-dimer, complete-blood-count parameters (NLR, thrombocyte, haemoglobin), creatinine, liver enzymes (alanine aminotransferase, gamma glutamyltransferase, etc.), cardiac troponins are still the most commonly analysed parameters utilized for the prediction of COVID-19 severity (3-9). Here, IL6 is linked to COVID-19.