Laboratory findings of norovirus infection include elevated concentration of inflammatory markers, hypokalemia, and chloride-sensitive metabolic alkalosis. Signs of dehydration may be present, such as relative polycythemia, elevated BUN, and elevated creatinine (pre-renal acute kidney injury). RT-PCR assay is the optimal test for the diagnosis of norovirus infection. Enzyme immunoassays to detect norovirus  have been developed but are less useful due to low sensitivity. Norovirus is not usually grown on culture.
Norovirus infection laboratory findings
Viral gastroenteritis laboratory findings
Norovirus infection physical examination
Campylobacteriosis laboratory findings
Traveler's diarrhea laboratory findings
Escherichia coli enteritis laboratory findings
Rotavirus infection physical examination
Rotavirus infection laboratory findings