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The anti-dsDNA (double-stranded DNA) ELISA is a blood test used to detect antibodies that mistakenly target the body's own DNA. Elevated levels of these antibodies are strongly associated with systemic lupus erythematosus (SLE), an autoimmune disease. The test involves coating a plate with dsDNA, adding the patient's blood sample, and detecting any bound antibodies using an enzyme-linked reaction. A positive result can aid in the diagnosis of SLE and help monitor disease activity.
