7 Laboratory Diagnosis Serologic Markers for the Different Phases of Acute and Chronic Hepatitis B Virus Infection HBsAg HBe Ag Anti- Anti- HBY Interpretation anti-HBc anti-HBc HBs HBe DHA Acute hBy infection Early phase window phase Recovery phase Chronic HBv infection Replicative phase Low, nonreplicative phase Flare-up of chronic HBV Precore/core promoter mutants7、Laboratory Diagnosis