Hepatitis A Antibody
Detectable during the acute stage of illness, while anti-HAV IgG may be present for many years after recovery or following vaccination. The presence of anti-HAV (IgG or IgM) in human serum or plasma is indicative of past or present infection with hepatitis A virus (HAV) or vaccination against HAV.
Why a doctor may order this
To detect past infection or vaccination immunity to hepatitis A; useful in acute hepatitis work-up or pre-travel.
Why you may need this
Hepatitis A immunity check.
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