IL6 and Increased total leukocyte count: In the review [52] including 24 studies with 270 participants with multisystem inflammatory condition (MIS-C), case studies from Europe and the United States, leukocytosis, neutrophilia and lymphopenia were encountered accompanied by one or more increased inflammatory markers (CRP, procalcitonin (PCT), erythrocyte sedimentation rate (ESR), ferritin, IL-6, D-Dimer).