Antinuclear Antibody Tests

Clin Lab Med. 2019 Dec;39(4):513-524. doi: 10.1016/j.cll.2019.07.001. Epub 2019 Oct 4.

Abstract

The presence of antinuclear antibodies (ANAs), which include autoantibodies to extractable nuclear antigens (ENAs), in the sera of patients with connective tissue diseases provides useful immunologic and pathophysiologic insight into the nature of their disease. This article discusses the most commonly used diagnostic modalities for detecting and quantitating the presence of ANA: indirect immunofluorescence assay, enzyme-linked immunosorbent assay, and multiplex bead technology, which serve as useful screening tests. We also review testing for autoantibodies to ENAs, which are often helpful to confirm the diagnosis of a specific connective tissue disease.

Keywords: ANA; Antinuclear antibodies; Jo-1; RNP; SS-A; SS-B; Scl70; Sm.

Publication types

  • Review

MeSH terms

  • Antibodies, Antinuclear / blood*
  • Autoimmune Diseases / diagnosis*
  • Fluorescent Antibody Technique, Indirect*
  • Humans
  • Immunoassay*

Substances

  • Antibodies, Antinuclear