Interpretation of Hepatitis A Test Results - Viral Hepatitis and Liver Disease
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Viral Hepatitis and Liver Disease

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Interpretation of Hepatitis A Test Results

for Health Care Providers

Interpretation of Test Results - Hepatitis A

Hep A Ab, IgGHep A Ab, IgM
Neg=negative (i.e. undetectable)
Pos=Positive (i.e. detectable)
NA= not available
Immune due to previous hepatitis A infectionPosNeg or NA
Successfully vaccinated
(protected from hepatitis A infection)
PosNeg or NA
Susceptible to hepatitis A infection
Never vaccinated, or vaccinated but did not maintain antibody response
NegNeg or NA
Acute hepatitis A infectionPos or NAPos
Insufficient data/provider ordered wrong test
Cannot determine immunity without Hep A Ab total
NANeg