Hepatitis A virus infection is best diagnosed by-
|A||IgM antibodies in serum|
|B||Isolation from stool|
|C||Culture from blood|
|D||Isolation from bile|
Best diagnostic technique for diagnosis of HAV infecton is detection of IgM antibodies in the serum by ELISA. Though the virus is cultivable and can be isolated from stool, it is not widely available.