Cotinine-3-BSA Antigen

Hapten-carrier conjugates of the cotinine-3-bovine serum albumin type are a standard reagent class for immunoassay work in nicotine-exposure studies. This Antibodies.com preparation couples the nicotine metabolite cotinine-3 to BSA so the small molecule becomes immunogenic, supplied as a ready-to-use liquid in a vial at 1 mg.

Cotinine is the principal oxidative metabolite of nicotine and is widely used in research and clinical workflows as a long-lived biomarker of recent tobacco or nicotine-product exposure, including cigarette smoke, smokeless tobacco, e-cigarette aerosols, and nicotine replacement therapy. Conjugates of this kind typically form the capture side of competitive immunoassays used to quantify cotinine in human samples.

Validated for ELISA workflows, the conjugate serves researchers developing anti-cotinine antibody titrations, calibrator preparation, or competitive immunoassay standards as a reference reagent for assay development, immunogen preparation, and antibody characterization studies. The liquid format supports direct dilution into coating buffers without further solubilization.

Storage: keep refrigerated, protect from light, and avoid repeated freeze-thaw cycles to preserve BSA integrity and hapten-coupling stability. For research use only.