The Anti-ds-DNA IgA/IgG/IgM Screen ELISA is a solid phase enzyme immunoassay with human recombinant double-stranded DNA (dsDNA) for the quantitative and qualitative detection of IgG, IgA, and IgM antibodies against dsDNA in human serum. Anti-dsDNA antibodies mainly recognize the phosphate units of DNA, thus these autoantibodies also bind single stranded DNA (ssDNA). To ensure correct quantitation of anti-dsDNA antibodies the antigen used in the kit has been proven to be free of contamination with ssDNA. The assay is a tool for the study of systemic lupus erythematosus (SLE).
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Most individuals with SLE display IgG class antibodies against dsDNA. These autoantibodies are associated with lupus nephritis. In addition, approximately 30% of individuals with SLE develop IgA class anti-dsDNA antibodies. It has been suggested that the presence of these IgA class antidsDNA antibodies may define a certain subset of individuals with SLE. Studies demonstrated the association of this subclass with certain parameters of the disease activity, such as elevated erythrocyte sedimentation rate, or the consumption of complement component C3, as well as the clinical parameters of cutaneous vasculitis, acral necrosis, and erythema. No association was found for nephritis and arthritis.
1. What percentage of your IgE allergy testing panel consists of molecular allergens rather than allergen extracts? The ALEX2 IgE allergen panel consists of 117 extracts and 183 molecular allergens. This represents the largest panel of molecular allergens on the market, including 50 unique...
Cases of food and environmental allergies have been increasing over the last decade. While conservative estimates suggest IgE-mediated allergy affects 6-8% of children and 2-3% of adults, some estimates are as high as 30%.3, 2 Symptoms can range from mild to severe and include itching, hives,...
Food sensitivity or food intolerance involves a non-allergic response to a food or food additive. In a recent on-line survey conducted in the U.S., 24% of adults aged 18 to 79 reported a food intolerance. While a food allergy is typically mediated by IgE antibodies, adverse reactions to food...
In a head-to-head comparison of FDA-cleared assays and a novel ALPCO method, investigators observed wide variability in specificity and false-positive rates across platforms, raising important questions about standardization and clinical interpretation.
July 22, 2025 – Salem, NH – NuvinkaDx, a leading innovator in diagnostic solutions, today announced two significant product and regulatory milestones from its operating companies, GeneProof and ALPCO.
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