Anti-Hepatitis B Surface Antigen (HBsAg) Antibody

Raised in equine hosts and supplied through Antibodies.com, this polyclonal reagent is directed against the surface antigen of Hepatitis B virus (HBsAg), with the immunogen prepared from subtypes Ad and Ay. The antibody is purified to an IgG fraction of greater than 95% purity and is provided unconjugated in a 500 µL volume, ready for direct labeling or use in standard immunoassays. Its validated applications include ELISA for quantitative serology work, IHC for tissue localization studies, and IFA for immunofluorescence-based detection. The unconjugated format preserves maximum flexibility for downstream conjugation chemistries, while the equine host background is well suited to protocols that require minimal cross-reactivity with commonly used mammalian secondary antibodies. Each lot is delivered as a polyclonal antibody preparation that has been affinity-purified to reduce non-specific binding, supporting consistent performance across ELISA plate, immunofluorescence, and immunohistochemistry workflows. For routine handling, the reagent should be stored refrigerated at 2–8 °C to preserve antibody activity over the shelf life of the product.