CRP and COVID-19: CRP: 11.8 mg/dl (4.7-18.1); COVID-19, 4.1 mg/dl; MIS-C, 14.6 mg/dl. Ferritin: 445 ng/ml (267-890) COVID-19, 7.42 ng/ml; MIS-C, 42 ng/ml. NT-proBNP: 1628 pg/ml (210-4450) COVID-19, 100 pg/ml; MIS-C, 2930 pg/ml.