
Steroid Hormone ELISA Kits
Signosis’ Steroid Hormone ELISA Kits enable precise quantification of four critical steroid hormones—cortisol, testosterone, estradiol (E2), and progesterone—across human, mouse, and rat samples. Using a competitive ELISA platform, these kits deliver exceptional specificity and sensitivity for the analysis of serum, plasma, cell/tissue lysates, and other liquid samples.
In addition to individual hormone assays, Signosis offers a multiplex combo kit capable of simultaneously measuring all four hormones on a single 96-well plate, providing an efficient and streamlined solution for comprehensive hormonal profiling.
Principle
How the Competitive ELISA Assay Works
Unlike a standard sandwich ELISA, the signal in a competitive assay is inversely proportional to the hormone concentration.
1. Plate Coating: The 96-well plate is pre-coated with a target hormone-protein conjugate.
2. Competition: When your sample is added, the free hormones compete with the plate-bound hormones for binding sites on a biotin-labeled anti-hormone antibody.
3. Detection: After washing away unbound materials, Streptavidin-HRP is added to bind to the biotinylated antibodies immobilized on the plate.
4. Colorimetric Result: TMB substrate reacts with the HRP to produce a blue color, which turns yellow upon adding a Stop solution.
5. Quantification: Absorbance is measured at 450 nm. A stronger signal indicates a lower concentration of the target hormone in your sample.
The assay can be used to analyze serum, cell, tissue, and other liquid samples from human, mouse, and rat models.
The Steroid Hormone ELISA Combo Kit includes four hormones on a single 96-well plate (24 wells per hormone) and enables simultaneous and quantitative detection of multiple targets in a single assay.

Products
Hormone | Product | SKU | Price (USD$) |
|---|---|---|---|
Multiplex | EA-7070 | 1500 | |
Cortisol | EA-7071 | 600 | |
Testosterone | EA-7072 | 600 | |
Estradiol | EA-7073 | 600 | |
Progesterone | EA-7074 | 600 |
Benefits
Multiplex
One ELISA plate can analyze 4 different steroid hormones simultaneously.
Compatible with Multiple Sample Types
Suitable for serum, plasma, cell and tissue lysates, and other sample types.
Quantitative Profiling & Analysis
Allows quantitative analysis of hormone levels in samples. Hormone standards are available for purchase separately.
