CXCL8 and COVID-19: The cited parameters included standard laboratory measurements, such as lymphocyte count, COVID-19 PCR test, basic metabolic panel (BMP) and levels of procalcitonin, ferritin, angiopoietin, d-dimer, bilirubin, alanine aminotransferase (ALT), creatinine, CKMB, cardiac troponin, and immune system parameters, such as IL-6, IL-8, IL-1ɑ, IL-1β, TNF-ɑ, and IL-1.