We're moving to rndsystems.com. Come with us!
After August 17, 2026, Novus Biologicals products and services will no longer be available on this website; you will access all products and services on rndsystems.com. Create your R&D Systems online account today.
![N/A Estradiol [Biotin]](http://images.novusbio.com/fullsize/elisa/DATA_Estradiol_KGE014_ELISA_916.jpg "N/A Estradiol [Biotin]")
![N/A Estradiol [Biotin]](http://images.novusbio.com/fullsize/elisa/Estradiol_KGE014_ELISA_451.jpg)
![Canine Estradiol ELISA Kit (Colorimetric) [NBP3-23544] - Samples were spiked with high concentrations of Canine Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23544_canine-estradiol-elisa-kit-colorimetric-1010202316552014.jpg "Canine Estradiol ELISA Kit (Colorimetric) [NBP3-23544] - Samples were spiked with high concentrations of Canine Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Canine Estradiol ELISA Kit (Colorimetric) [NBP3-23544] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23544_canine-estradiol-elisa-kit-colorimetric-432024941559.jpg)
![Estradiol ELISA Kit (Colorimetric) [NBP3-23555] - Samples were spiked with high concentrations of Equine Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23555_estradiol-elisa-kit-colorimetric-101020231653497.jpg "Estradiol ELISA Kit (Colorimetric) [NBP3-23555] - Samples were spiked with high concentrations of Equine Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Equine Estradiol ELISA Kit (Colorimetric) [NBP3-23555] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23555_estradiol-elisa-kit-colorimetric-43202495070.jpg)
![Porcine Estradiol ELISA Kit (Colorimetric) [NBP3-23563] - Samples were spiked with high concentrations of Porcine Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23563_porcine-estradiol-elisa-kit-colorimetric-1010202316542611.jpg "Porcine Estradiol ELISA Kit (Colorimetric) [NBP3-23563] - Samples were spiked with high concentrations of Porcine Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Porcine Estradiol ELISA Kit (Colorimetric) [NBP3-23563] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23563_porcine-estradiol-elisa-kit-colorimetric-43202485749.jpg)
![Monkey Estradiol ELISA Kit (Colorimetric) [NBP3-23560] - Samples were spiked with high concentrations of Monkey Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23560_monkey-estradiol-elisa-kit-colorimetric-1010202316552011.jpg "Monkey Estradiol ELISA Kit (Colorimetric) [NBP3-23560] - Samples were spiked with high concentrations of Monkey Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Monkey Estradiol ELISA Kit (Colorimetric) [NBP3-23560] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23560_monkey-estradiol-elisa-kit-colorimetric-432024963925.jpg)
![Rat Estradiol ELISA Kit (Colorimetric) [NBP3-23566] - Samples were spiked with high concentrations of Rat Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23566_rat-estradiol-elisa-kit-colorimetric-1010202316542624.jpg "Rat Estradiol ELISA Kit (Colorimetric) [NBP3-23566] - Samples were spiked with high concentrations of Rat Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Rat Estradiol ELISA Kit (Colorimetric) [NBP3-23566] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23566_rat-estradiol-elisa-kit-colorimetric-4320249124840.jpg)
![Human Estradiol ELISA Kit (Colorimetric) [NBP3-23551] - Samples were spiked with high concentrations of Human Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23551_human-estradiol-elisa-kit-colorimetric-1010202316542612.jpg "Human Estradiol ELISA Kit (Colorimetric) [NBP3-23551] - Samples were spiked with high concentrations of Human Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Human Estradiol ELISA Kit (Colorimetric) [NBP3-23551] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23551_human-estradiol-elisa-kit-colorimetric-432024911560.jpg)
![Chicken Estradiol ELISA Kit (Colorimetric) [NBP3-23546] - Samples were spiked with high concentrations of Chicken Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23546_chicken-estradiol-elisa-kit-colorimetric-101020231655203.jpg "Chicken Estradiol ELISA Kit (Colorimetric) [NBP3-23546] - Samples were spiked with high concentrations of Chicken Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Chicken Estradiol ELISA Kit (Colorimetric) [NBP3-23546] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23546_chicken-estradiol-elisa-kit-colorimetric-4320248582536.jpg)
![Mouse Estradiol ELISA Kit (Colorimetric) [NBP3-23559] - Samples were spiked with high concentrations of Mouse Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23559_mouse-estradiol-elisa-kit-colorimetric-101020231654266.jpg "Mouse Estradiol ELISA Kit (Colorimetric) [NBP3-23559] - Samples were spiked with high concentrations of Mouse Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Mouse Estradiol ELISA Kit (Colorimetric) [NBP3-23559] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23559_mouse-estradiol-elisa-kit-colorimetric-4320249163388.jpg)
![Bovine Estradiol ELISA Kit (Colorimetric) [NBP3-23540] - Samples were spiked with high concentrations of Bovine Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23540_bovine-estradiol-elisa-kit-colorimetric-101020231655206.jpg "Bovine Estradiol ELISA Kit (Colorimetric) [NBP3-23540] - Samples were spiked with high concentrations of Bovine Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Bovine Estradiol ELISA Kit (Colorimetric) [NBP3-23540] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23540_bovine-estradiol-elisa-kit-colorimetric-432024915851.jpg)
![Rabbit Estradiol ELISA Kit (Colorimetric) [NBP3-23570] - Samples were spiked with high concentrations of Rabbit Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23570_rabbit-estradiol-elisa-kit-colorimetric-1010202316542622.jpg "Rabbit Estradiol ELISA Kit (Colorimetric) [NBP3-23570] - Samples were spiked with high concentrations of Rabbit Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Rabbit Estradiol ELISA Kit (Colorimetric) [NBP3-23570] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23570_rabbit-estradiol-elisa-kit-colorimetric-43202495067.jpg)
![Sheep Estradiol ELISA Kit (Colorimetric) [NBP3-23573] - Samples were spiked with high concentrations of Sheep Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.](http://images.novusbio.com/fullsize/nbp3-23573_sheep-estradiol-elisa-kit-colorimetric-101020231654261.jpg "Sheep Estradiol ELISA Kit (Colorimetric) [NBP3-23573] - Samples were spiked with high concentrations of Sheep Estradiol and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.")
![ELISA: Sheep Estradiol ELISA Kit (Colorimetric) [NBP3-23573] - Standard Curve Reference](http://images.novusbio.com/fullsize/nbp3-23573_sheep-estradiol-elisa-kit-colorimetric-4320249124813.jpg)