Anti-Progesterone-11 Antibody

This rabbit polyclonal reagent from Antibodies.com is raised against Progesterone-11, a hapten conjugate in which the steroid is linked through the C-11 position. Polyclonal antibodies directed at this site are commonly deployed as capture or detection reagents in competitive immunoassays for measuring progesterone, supporting reproductive endocrinology research, estrous cycle monitoring, and veterinary pregnancy diagnostics in species such as cattle, horses, sheep, and swine.

Supplied as neat serum in a 100 µL vial, the antibody is unconjugated, allowing direct coupling to reporter enzymes, biotin, or fluorophores depending on assay design. The polyclonal format offers recognition of multiple epitopes on the progesterone molecule, which can improve tolerance to minor matrix effects when analyzing milk, saliva, and other sample types relative to monoclonal alternatives.

For handling, store refrigerated at 4 °C in sealed aliquots to preserve activity across freeze-thaw cycles; for longer-term storage, freezing at -20 °C is appropriate. The reagent is intended for research use only and is well matched to immunohistochemistry, ELISA, western blot, and direct steroid quantification workflows where progesterone-specific recognition is required.