Читать книгу A Practical Approach to Special Care in Dentistry - Группа авторов - Страница 205

 HBVThe laboratory diagnosis of hepatitis B is based on detecting hepatitis B surface antigen (HBsAg) in a peripheral blood sampleIn the acute phase of the infection, immunoglobulin M (IgM) against the hepatitis core antigen (HBcAg) is also detectedThe presence of hepatitis antigen ‘e’ (HBeAg) is indicative of high levels of viral replication and therefore high infection potentialChronic hepatitis by HBV is characterised by the persistence of HBsAg for more than 6 months

 HCVIn patients who have been infected by HCV, anti‐HCV antibodies are detected in serological testsTo confirm the chronic infection in patients who are anti‐HCV positive, a nucleic acid test for detecting HCV‐RNA is requiredWhen the HCV infection becomes chronic, biopsy and other less invasive tests are employed to quantify the hepatic damage