Elisa Kit for Eastradiol E-2

Category: SKU: CC-EK-ETD-E2

Our Elisa Kit products are perfect for the analysis of biological fluids, including Serum, plasma, tissue homogenates, cell lysates, cell culture supernatants, and other biological fluids.

ConductScience offers Elisa Kits for Analysis.


This assay has high sensitivity and excellent specificity for the detection of Estradiol (E2).
No significant cross-reactivity or interference between Estradiol (E2) and analogs was observed.


Matrices listed below were spiked with a certain level of Estradiol (E2) and the recovery rates were calculated by comparing the measured value to the expected amount of Estradiol (E2) in samples.

MatrixRecovery range (%)Average(%)
EDTA plasma(n=5)80-10188
heparin plasma(n=5)96-104101

Intra-assay Precision (Precision within an assay): 3 samples with low, middle, and high-level Estradiol (E2) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high-level Estradiol (E2) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-assay: CV<12%


The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Estradiol (E2) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

EDTA plasma(n=5)81-96%83-94%80-95%78-101%
heparin plasma(n=5)86-101%80-94%80-101%84-101%

The loss rate of activity determines the stability of the kit. The loss rate of this kit is less than 5% within the expiration date under appropriate storage conditions.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, and incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Reagents and materials provided
Pre-coated, ready-to-use 96-well strip plate1Plate sealer for 96 wells4
Standard2Standard Diluent1×20mL
Detection Reagent A1×120µLAssay Diluent A1×12mL
Detection Reagent B1×120µLAssay Diluent B1×12mL
TMB Substrate1×9mLStop Solution1×6mL
Wash Buffer (30 × concentrates)1×20mLInstruction manual1
Assay procedure summary

1. Prepare all reagents, samples, and standards;
2. Add 50µL standard or sample to each well. And then add 50µL prepared Detection Reagent A immediately. Shake and mix. Incubate for 1 hour at 37°C;
3. Aspirate and wash 3 times;
4. Add 100µL prepared Detection Reagent B. Incubate for 30 minutes at 37°C;
5. Aspirate and wash 5 times;
6. Add 90µL Substrate Solution. Incubate for 10-20 minutes at 37°C;
7. Add 50µL Stop Solution. Read at 450 nm immediately.

Additional information


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