quantitative (number of copies per milliliter (ml)). Liver biopsy, ultrasound, and computed tomography (CT) scan tests Note: can detect damage to the liver but will not identify the type of infection. c. Interpreting The table below provides an example of a laboratory interpretation of Lab Reports serology test results for HBV. for HBV Test Results Interpretation Example 1 HBsAg negative susceptible to infection anti-HBc negative susceptible to infection (no hepatitis B) anti-HBs negative no history of hepatitis B Example 2 HBsAg negative immune anti-HBc negative or positive immune anti-HBs positive Example 3 HBsAg positive acute infection anti-HBc positive Immunoglobulin M positive acute infection (IgM) anti-HBc anti-HBs negative Example 4 HBsAg positive chronic infection anti-HBc positive IgM anti-HBc negative chronic infection anti-HBs negative d. Interpreting The table below provides an example of a laboratory interpretation of Lab Reports serology testing for HCV for testing performed after 1992. for HCV After 1992 Tests Results Interpretation anti-HCV positive (probable need to verify diagnosis chronic hepatitis) EIA positive supplemental test required RIBA positive diagnostic
quantitative (number of copies per milliliter (ml)). Note: Liver biopsy, ultrasound, and computed tomography (CT) scan tests can detect damage to the liver but will not identify the type of infection. c. Interpreting Lab Reports for HBV The table below provides an example of a laboratory interpretation of serology test results for HBV. Test Results Interpretation Example 1 HBsAg negative susceptible to infection anti-HBc negative susceptible to infection (no hepatitis B) anti-HBs negative no history of hepatitis B Example 2 HBsAg negative immune anti-HBc negative or positive immune anti-HBs positive Example 3 HBsAg positive acute infection anti-HBc positive Immunoglobulin M (IgM) anti-HBc positive acute infection anti-HBs negative Example 4 HBsAg positive chronic infection anti-HBc positive IgM anti-HBc negative chronic infection anti-HBs negative d. Interpreting Lab Reports for HCV After 1992 The table below provides an example of a laboratory interpretation of serology testing for HCV for testing performed after 1992. Tests Results Interpretation anti-HCV positive (probable chronic hepatitis) need to verify diagnosis EIA positive supplemental test required RIBA positive diagnostic
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