Anti-IgM Antibody (HRP) [KT38] - Identical to Abcam (ab106742)

The KT38 monoclonal clone distributed by Antibodies.com targets the mu heavy chain of human IgM, functioning as a primary detector in quantitative ELISA workflows for human immunoglobulin M. Supplied as a 100 µg liquid in a vial, the antibody carries an HRP label so no secondary incubation step is required, simplifying assay turnaround. The reagent is mouse IgG1 isotype and is validated for human IgM, with negligible cross-reactivity against other human immunoglobulin classes when used in a paired capture-and-detection format. For handling, aliquot upon first use and store refrigerated in the dark to preserve peroxidase activity; avoid repeated freeze-thaw cycles of the working stock. Recommended dilution depends on the matched capture antibody and substrate system, and should be titrated empirically. This reagent is commonly paired with anti-human IgM capture antibodies for serum IgM quantification in immune-deficiency, infection serology, and gammopathy workups.