General Estriol (E3) ELISA Kit

The Assay Genie General Estriol (E3) ELISA Kit enables quantitative measurement of unconjugated estriol in research specimens using a competitive immunoassay workflow. Estriol (E3) is one of the three principal endogenous estrogens and is synthesized predominantly by the fetoplacental unit during pregnancy, making circulating levels a key biomarker in maternal-fetal medicine research.

Investigators apply this assay in studies of late-trimester fetal wellbeing, aneuploidy screening cohorts, placental insufficiency models, and estrogen metabolism pathway investigations. The kit includes a pre-coated microplate, calibrated standards, detection antibody, and buffer solutions sufficient for 96 determinations in a single-use break-apart strip format.

Each microplate well accommodates a 50 uL sample volume, with absorbance read on a standard plate reader at the assay's recommended wavelength. Researchers should aliquot reconstituted standards to limit repeated freeze-thaw exposure and store kit components refrigerated between uses. Intended for research use only, not for diagnostic procedures.