Double-stranded (ds, native) DNA (dsDNA) antibodies of the IgG class are an accepted criterion (American College of Rheumatology) for the diagnosis of systemic lupus erythematosus (SLE). dsDNA antibodies are detectable in approximately 85% of patients with untreated SLE, and are rarely detectable in other connective tissue diseases. Weakly-positive results caused by low-avidity antibodies to dsDNA are not specific for SLE and can occur in a variety of diseases.
Testing for IgG antibodies to dsDNA is indicated in patients who have a positive test for antinuclear antibodies (ANA) along with signs and symptoms that are compatible with the diagnosis of SLE. If the ANA test is negative, there is no reason to test for antibodies to dsDNA.
The levels of IgG antibodies to dsDNA in serum are known to fluctuate with disease activity in lupus erythematosus, often increasing prior to an increase in inflammation and decreasing in response to therapy.
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Acetylcholine Receptor (AChR) Antibody, Activated partial thromboplastin time (APTT), Anti-Smith Antibody, Antinuclear Antibodies Direct (ANA Direct), C3a desArg Fragment, CCP Antibodies IgG/IgA, Complement C3, Complement C4, Serum, Complement C4a, Cyclic Citrullinated Peptide Antibody, Dilute Russell's viper venom time (dRVVT), ds-DNA Antibody, IgG, Erythrocyte Sedimentation Rate (ESR), Histamine, Plasma, Immature Grans (Abs), Immature Granulocytes (%), Immunoglobulin A, Qn, Serum, Immunoglobulin D, Quant, Serum, Immunoglobulin E, Total, Immunoglobulin G, Qn, Serum, Immunoglobulin M, Qn, Serum, Interleukin-2, Serum, Interleukin-6, Jo 1 Antibodies, IgG, Serum, Liver-Kidney Microsomal Antibodies, Lupus Anticoagulant, Prothrombin Time (PT), Prothrombin Time (PT) INR, RA Latex Turbid, Rheumatoid factor, TGF-b1, Thrombin time, Transforming Growth Factor beta, Plasma, Tryptase, Vegf, Serum
