Human Lefty-A PharmaGenie ELISA Kit (SBRS0827)

The Assay Genie Lefty-A immunoassay targets human Left-right determination factor A (LEFTY1), a secreted signalling protein of the TGF-beta superfamily that antagonises Nodal activity during embryonic left-right axis patterning. Investigators in developmental biology and stem cell research use the kit to measure LEFTY1 release into conditioned media from differentiating embryonic stem cell cultures, while reproductive and oncology studies apply it to quantify circulating levels in human serum or plasma specimens. Each pack supplies a pre-coated microplate, lyophilised recombinant standards, biotinylated detection antibody, streptavidin-HRP conjugate, wash buffer, and chromogenic substrate; reconstituted components should be kept refrigerated at 4°C, protected from light, and unused strips returned to the sealed pouch with desiccant. The reagents are intended for in vitro research use only and are not cleared for clinical diagnostic testing.