Medical expert of the article
New publications
Hepatitis A test: IgG antibodies to HAV in the blood
Last reviewed: 23.04.2024
All iLive content is medically reviewed or fact checked to ensure as much factual accuracy as possible.
We have strict sourcing guidelines and only link to reputable media sites, academic research institutions and, whenever possible, medically peer reviewed studies. Note that the numbers in parentheses ([1], [2], etc.) are clickable links to these studies.
If you feel that any of our content is inaccurate, out-of-date, or otherwise questionable, please select it and press Ctrl + Enter.
The growth of anti-HAV IgG occurs at a later time - in the phase of convalescence - and therefore can not serve as a criterion for early diagnosis of viral hepatitis A. The detection of anti-HAV IgG in healthy people (possibly in 30-60% of healthy population) indicates a previous infection and immunity (retrospective diagnosis). At the same time, the absence of anti-HAV IgG during the height of hepatitis makes it possible to exclude its association with HAV. Quantitation of anti-HAV IgG in serum can be used to assess the dynamics of the postvaccinal immune response in vaccination against viral hepatitis A.
[