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  2. Antinuclear antibody - Wikipedia

    en.wikipedia.org/wiki/Antinuclear_antibody

    [10] On the other hand, they say, although 95% of the patients who actually have lupus test positive for ANA, "Only a small percentage have a negative ANA, and many of those have other antibodies (such as anti-phospholipid antibodies, anti-Ro, anti-SSA) or their ANA converted from positive to negative from steroids, cytotoxic medications, or ...

  3. Anti-dsDNA antibodies - Wikipedia

    en.wikipedia.org/wiki/Anti-dsDNA_antibodies

    The kinetoplast fluoresces if serum contains high avidity anti-dsDNA antibodies. This test has a higher specificity than EIA because it uses unprocessed DNA. Processed DNA can contain regions of ssDNA, allowing detection of anti-ssDNA antibodies, which can give false positive results. [1] [28]

  4. Extractable nuclear antigen - Wikipedia

    en.wikipedia.org/wiki/Extractable_nuclear_antigen

    Indeed, in 84.3% of positive anti-ENA samples, ANA reagents were also found. [1] The use of anti-ENA autoantibody tests can serve as additional verification of an autoimmune disorder, because a positive ANA test alone does not suffice for diagnosis. In fact, low levels of ANAs can be found in healthy patients.

  5. Autoantibody - Wikipedia

    en.wikipedia.org/wiki/Autoantibody

    ANA is a marker of the autoimmune process – it is positive with a variety of different autoimmune diseases but not specific. Consequently, if an ANA test is positive, it is often followed up with other tests associated with arthritis and inflammation, such as a rheumatoid factor (RF), an erythrocyte sedimentation rate (ESR), a c-reactive ...

  6. My Covid-19 Test Was First Positive, Then Negative: Why It ...

    www.aol.com/lifestyle/covid-19-test-first...

    This test is referred to as the genetic, RNA or PCR test. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...

  7. Undifferentiated connective tissue disease - Wikipedia

    en.wikipedia.org/wiki/Undifferentiated...

    dry eyes, dry mouth, hair loss, joint inflammation, joint pain, mouth ulcers, positive ANA test, raynaud's phenomenon, sun-sensitive rash... Undifferentiated connective tissue disease ( UCTD ) (also known as latent lupus or incomplete lupus [ 1 ] ) is a disease in which the connective tissues are targeted by the immune system.

  8. You can still be contagious with COVID if you have a negative ...

    www.aol.com/news/still-contagious-covid-negative...

    If you have symptoms and test negative with an at-home rapid test, test again 48 hours later, the CDC advises. If you were exposed to COVID, do not have symptoms and test negative, test again 48 ...

  9. Hook effect - Wikipedia

    en.wikipedia.org/wiki/Hook_effect

    In an agglutination test, a person's serum (which contains antibodies) is added to a test tube, which contains a particular antigen. If the antibodies interact with the antigen to form immune complexes , called agglutination, then the test is interpreted as positive.