Progesterone-11-hemisuccinyl-BSA Antigen

This liquid-format steroid-protein conjugate from Antibodies.com couples progesterone at the C11 position through a hemisuccinyl spacer to bovine serum albumin (BSA), presenting the hapten in a defined orientation that mimics how the native hormone is recognized by anti-progesterone antisera. The resulting 1 mg immunogen is supplied as a ready-to-dilute liquid and serves as a coating antigen in competitive immunoassay development and as an immunogen for raising polyclonal or monoclonal anti-progesterone antibodies in rabbits, goats, or mice.

Because the C11 linkage exposes the A and D rings of the steroid for paratope contact while tucking the C11-derived carboxyl handle into the carrier protein, the conjugate works well in bridge-style assay formats where antibody binding to free progesterone in a sample is measured by displacement of labelled conjugate from a solid phase. The product is provided at 1 mg per vial in a liquid buffer ready for direct dilution into coating or immunization workflows.

Recommended handling: aliquot upon first thaw to limit freeze-thaw cycles, protect from light, and store refrigerated between use sessions to preserve hapten integrity. Researchers building progesterone detection assays for veterinary reproductive diagnostics, livestock cycle monitoring, or environmental water screening can pair this antigen with matched anti-progesterone antibodies to construct standard curves in a competitive immunoassay format.