What is the most reliable method for diagnosing Hepatitis A virus infection?

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Detection of IgM antibodies in the bloodVirus isolation from stool samplesBlood culture for the virusVirus isolation from bile

Explanation

The presence of IgM antibodies in serum is the primary and most accurate indicator of recent Hepatitis A virus infection. While the virus can be isolated from stool or bile, serological detection of IgM antibodies is the preferred diagnostic approach.