E3(Estriol) ELISA Kit
SKU: E-EL-0156
E3(Estriol) ELISA Kit
Detection Range | 7.81-500 pg/mL |
Sensitivity | 3.70 pg/mL |
Product Details
Properties
Assay type | Competitive-ELISA |
Format | 96T |
Assay time | 2.0h |
Detection range | 7.81-500 pg/mL |
Sensitivity | 3.70 pg/mL |
Sample type &Sample volume | serum and plasma; 50μL |
Specificity | This kit recognizes E3 in samples. No significant cross-reactivity or interference between E3 and analogues was observed. |
Reproducibility | Both intra-CV and inter-CV are < 10%. |
Application | This ELISA kit applies to the in vitro quantitative determination of E3 concentrations in serum and plasma. |
Test Principle
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with E3. During the reaction, E3 in the sample or standard competes with a fixed amount of E3 on the solid phase supporter for sites on the Biotinylated Detection Ab specific to E3. Excess conjugate and unbound sample or standard are washed away, and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well and incubated. Then a TMB substrate solution is added to each well. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns from blue to yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of E3 in tested samples can be calculated by comparing the OD of the samples to the standard curve.
Kit Components and Storage
An unopened kit can be stored at 2-8℃ for 1 month. If the kit is not supposed to be used within 1 month, store the components separately according to the following conditions once the kit is received.
Item | Specifications | Storage |
Micro ELISA Plate(Dismountable) | 96T: 8 wells ×12 strips | -20℃, 6 months |
48T: 8 wells ×6 strips | ||
Reference Standard | 96T: 2 vials | |
48T: 1 vial | ||
Concentrated Biotinylated Detection Ab (100×) | 96T: 1 vial, 120 μL | |
48T: 1 vial, 60 μL | ||
Concentrated HRP Conjugate (100×) | 96T: 1 vial, 120 μL | -20℃(Protect from light), 6 months |
48T: 1 vial, 60 μL | ||
Reference Standard & Sample Diluent | 1 vial, 20 mL | 2-8°C, 6 months |
Biotinylated Detection Ab Diluent | 1 vial, 14 mL | |
HRP Conjugate Diluent | 1 vial, 14 mL | |
Concentrated Wash Buffer (25×) | 1 vial, 30 mL | |
Substrate Reagent | 1 vial, 10 mL | 2-8℃ (Protect from light) |
Stop Solution | 1 vial, 10 mL | 2-8℃ |
Plate Sealer | 5 pieces | |
Manual | 1 copy | |
Certificate of Analysis | 1 copy |
Technical Data:
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level E3 were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level E3 were tested on 3 different plates, 20 replicates in each plate.
Intra-assay Precision | Inter-assay Precision | |||||
---|---|---|---|---|---|---|
Sample | 1 | 2 | 3 | 1 | 2 | 3 |
n | 20 | 20 | 20 | 20 | 20 | 20 |
Mean (pg/mL) | 30.63 | 80.77 | 200.24 | 33.54 | 82.78 | 205.73 |
Standard deviation | 2.55 | 5.84 | 10.85 | 3.24 | 6.83 | 14.85 |
CV (%) | 8.34 | 7.23 | 5.42 | 9.67 | 8.25 | 7.22 |
Recovery
The recovery of E3 spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.
Sample Type | Range (%) | Average Recovery (%) |
---|---|---|
Serum(n=8) | 81-95 | 85 |
EDTA plasma(n=8) | 86-98 | 89 |
Urine(n=8) | 85-103 | 95 |
Target Information
Research Area | Cell Biology, Signal transduction, Developmental biology |
Assay Procedures
1. Add 50μL standard or sample to the wells, immediately add 50μL Biotinylated Detection Ab working solution to each well. Incubate for 45 min at 37°C |
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2. Aspirate and wash the plate for 3 times |
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3. Add 100μL HRP conjugate working solution. Incubate for 30 min at 37°C. Aspirate and wash the plate for 5 times |
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4. Add 90μL Substrate Reagent. Incubate for 15 min at 37°C |
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5. Add 50μL Stop Solution |
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6. Read the plate at 450nm immediately. Calculation of the results |