CRP and Decreased total neutrophil count: Laboratory biomarkers, such as C-reactive protein (CRP), ferritin, D-dimer, cardiac troponin (cTn), NT-proBNP, lymphopenia, neutropenia, and, if available, circulating IL-6 levels have been associated with MIS in Stages 2–3 and also with poor outcomes of COVID-19 [32,61].