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  2. Seroconversion - Wikipedia

    en.wikipedia.org/wiki/Seroconversion

    Current CDC recommendations are to begin with a test that screens for both antigen and antibody, then follow up with an immunoassay to differentiate between HIV-1 and HIV-2 antibodies. Non-reactive (negative) tests are followed up with nucleic acid tests for viral RNA. [27]

  3. Hepatitis C - Wikipedia

    en.wikipedia.org/wiki/Hepatitis_C

    There are several diagnostic tests for hepatitis C, including HCV antibody enzyme immunoassay (ELISA), recombinant immunoblot assay, and quantitative HCV RNA polymerase chain reaction (PCR). [16] HCV RNA can be detected by PCR typically one to two weeks after infection. In contrast, antibodies can take substantially longer to form and thus be ...

  4. Cross-reactivity - Wikipedia

    en.wikipedia.org/wiki/Cross-reactivity

    Cross-reactivity, in a general sense, is the reactivity of an observed agent which initiates reactions outside the main reaction expected.This has implications for any kind of test or assay, including diagnostic tests in medicine, and can be a cause of false positives.

  5. Understanding hepatitis C: A growing public health concern - AOL

    www.aol.com/news/understanding-hepatitis-c...

    Mar. 14—Hepatitis C is a liver infection caused by the hepatitis C virus. It is becoming a big public health concern in many counties, including Lawrence County, encouraging us to review some ...

  6. Autoimmune hepatitis - Wikipedia

    en.wikipedia.org/wiki/Autoimmune_hepatitis

    On the basis of detected autoantibodies, autoimmune hepatitis can be classified into three subtypes but have no distinct clinical presentations. Type 1 autoimmune hepatitis. Positive antibodies include: [19] [20] Antinuclear antibody (ANA) Anti-smooth muscle antibody (ASMA) - 65% of people; Anti-actin antibodies

  7. Hepatitis C virus nonstructural protein 5A - Wikipedia

    en.wikipedia.org/wiki/Hepatitis_C_virus...

    Nonstructural protein 5A (NS5A) is a zinc-binding and proline-rich hydrophilic phosphoprotein that plays a key role in Hepatitis C virus RNA replication. [1] [2] It appears to be a dimeric form without trans-membrane helices. [3]

  8. Antinuclear antibody - Wikipedia

    en.wikipedia.org/wiki/Antinuclear_antibody

    Depending on the antibody present in the human serum and the localisation of the antigen in the cell, distinct patterns of fluorescence will be seen on the HEp-2 cells. [53] [54] Levels of antibodies are analysed by performing dilutions on blood serum. An ANA test is considered positive if fluorescence is seen at a titre of 1:40/1:80.

  9. Regular and irregular antibodies - Wikipedia

    en.wikipedia.org/wiki/Regular_and_irregular...

    Regular and irregular antibodies are two main groups of antibodies when classified roughly on the timing and triggering event of antibody production. Regular antibodies usually refer to the isohemagglutinins, directed against antigens of the ABO system. They appear in the first years of life. They are of the IgM type. [1]

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