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  3. Estriol, Free ELISA kit (CAN-E-640)/
DBC Free Estriol Serum ELISA kit, kit image, silhouette of a pipette
Ref CAN-E-640
Kit Type: Competitive ELISA
Kit Size: 96-well break-apart microplate
Sensitivity: 0.058 ng/mL
Sample Type: Human serum / 10 μL
Calibrator Range: 0.05–30 ng/mL
Total Assay Time: 80 minutes
Note: When using the kit, the IFU version that is provided with the kit must be followed.
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  • CAN / EU: For research use only. Not for use in diagnostic procedures.
  • USA: IVD

The Free Estriol (also referred to as unconjugated estriol or uE3 in the literature) ELISA is a competitive immunoassay. Competition occurs between Estriol present in calibrators, controls and patient samples and an enzyme-labelled antigen (conjugate) for a limiting number of anti-Estriol antibody binding sites on the microplate wells. After a washing step that removes unbound materials, the enzyme substrate is added, and approximately 15–20 minutes later the enzymatic reaction is terminated by addition of stopping solution. The resulting optical density (OD), measured with a microplate reader, is inversely proportional to the concentration of Estriol in the sample. A calibrator curve is plotted with a provided set of calibrators to calculate directly the concentration of estriol in patient samples and controls.

Medical applications