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Hepatitis B surface antigen Special Instructions This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin or B8, vitamin H, or coenzyme R)The hepatitis B virus (HBV) is a small DNA virus with unusual features similar to retroviruses1,2It is a prototype virus of the Hepadnaviridaefamily Related viruses are found in woodchucks, ground squirrels, tree squirrels, Peking ducks, and herons Based on sequence comparison, HBV is classified into eight genotypes, A to HHepatitis B is spread parenterally, through intimate personal contact, and perinatally Persons at risk include intravenous drug users, children of mothers with HBV, men who have sex with men, patients on hemodialysis, and those exposed to blood or blood products The incubation period ranges from 45 to 160 days Pin On Med Studies Hepatitis b serology