The diagnosis of past exposure to hepatitis E virus.
A negative result does not exclude the presence of recent hepatitis E infection (<2 months duration), especially if immunocompromised patients. Repeat testing for anti-hepatitis E virus (HEV) IgM and anti-HEV IgG in 1 to 2 months is recommended for diagnosis of recent hepatitis E.
Frozen (preferred) - 30 days
Refrigerated - 24 hours
Enzyme Immunoassay (EIA)-Screening Procedure