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Table 6 Main laboratory abnormalities in patients with Kawasaki disease

From: Kawasaki disease: guidelines of the Italian Society of Pediatrics, part I - definition, epidemiology, etiopathogenesis, clinical expression and management of the acute phase

BLOOD CELL COUNT
white blood cells ↑, maximal elevation of polymorphonuclear cells
↓ rarely
red blood cells ↓, normal mean corpuscular volume
platelets ↑, typically in the II and III week, normalization in 4–8 weeks
if ↓ suspect disseminated intravascular dissemination
INFLAMMATORY PARAMETERS
erythro-sedimentation rate (ESR) ↑, slow normalization
C-reactive protein (CRP) ↑, fast normalization
LIVER FUNCTION TESTS
transaminases
bilirubinemia
gamma-glutamyl transpeptidase
albuminemia more severe and prolonged illness if ↓
OTHER LABORATORY TESTS
urine white blood cells > 10/high field powered
cerebrospinal fluid aseptic meningitis (presence of mononuclear cells, normal glucose/proteins)
synovial fluid purulent-appearing fluid, white blood cells 125.000–300.000/mm3, normal glucose level