Skip to main content

HTRF Estradiol Detection Kit, 500 Assay Points

The Estradiol kit is intended to quantify 17b-estradiol from cells, serum, and in biochemical assays.

For research use only. Not for use in diagnostic procedures. All products to be used in accordance with applicable laws and regulations including without limitation, consumption & disposal requirements under European REACH regulations (EC 1907/2006).
Product Variants
Part number: 62ESTPEG
Unit Size: 500 Assay Points
List price: USD 852.84
Your price:
USD 852.84
USD 852.84 /each
Part number: 62ESTPEH
Unit Size: 10,000 Assay Points
List price: USD 9,232.00
Your price:
USD 0.00
USD 9,232.00 /each


There is substantial research indicating that breast cancer tissue contains the enzymes necessary to synthesize estradiol (17ß-estradiol), a steroid hormone that plays an important role in this disease. Two main pathways are involved in the formation of estradiol in breast cancer tissues: the aromatase pathway, which transforms androgens into estrogens, and the sulfatase pathway, which converts estrone into estradiol via the 17ß-HSD1 enzyme. The Estradiol kit is a highly specific assay for measuring estradiol in whole cells, cell supernatants, or biochemical enzyme assays.


Assay Points
Assay Target Type
Assay Technology
Therapeutic Area
Unit Size
500 Assay Points

Video gallery

How it works

Assay principle

The kit is based on a competitive format involving a specific antibody labelled with Cryptate (donor) and estradiol coupled to XL665 (acceptor). Estradiol produced by cells or purified 17ß-HSD1 enzyme competes with XL665-labelled estradiol for binding to monoclonal anti-estradiol Eu Cryptate.

Assay protocol

The estradiol assay features a streamlined protocol with only two incubation steps: - Cell stimulation by target compounds - Estradiol detection using HTRF reagents This protocol requires only a single, two-hour incubation period following cell stimulation.



Assay details

Key features
Detection limit: 0.02 ng/mL
Dynamic range: 0.02 to 20 ng/mL
EC50: 0.8 ng/mL
S/B: 14
Specificity: Estrone 0.4%
Estriol 0.3%
Estrone 3 sulfate 0.002%
Testosterone 0.2%
Progesterone 0.002%.


Assay validation

Detecting 17ß-HSD1 activity

A human breast cancer cell line, T-47D, was tested for the production of estradiol when stimulated with estrone using the HTRF Estradiol assay. Assay reagents were added directly to the cell culture plate following cell stimulation. As Figure 2 shows, estradiol was detected using as few as 780 cells. The ability to miniaturize and run the assay in a single plate while not sacrificing assay performance makes HTRF Estradiol an ideal tool for screening. 

T-47D cells were dispensed as indicated into 96-half-well plates. 50 µl MEM containing 10 nM Estrone were added and cells incubated for 20 hours. Estradiol assay reagents were added directly to cultured cells. Following a 2 hour incubation, fluorescence signals were read and estradiol concentrations calculated using a standard curve.




1-1 of 1 Resources
HTRF solutions, guide to major applications

This guide provides you an overview of HTRF applications in several therapeutic areas.

SDS, COAs, Manuals and more Illuminator

SDS, COAs, Manuals and more

Are you looking for technical documents for this product. We have housed them in a dedicated section., click on the links below to explore.

Scroll Icon