Instant ELISA Kit for Cortisol (Cor)
Hydrocortisone
- Product No.IEA462Ge
- Organism SpeciesPan-species (General) Same name, Different species.
- Test MethodCompetitive Inhibition
- Assay Length1h, 10min
- Detection Range12.35-1,000ng/mL
- SensitivityThe minimum detectable dose of this kit is typically less than 4.59ng/mL.
- Sample Typeserum, plasma and other biological fluids
- Download Instruction Manual
- UOM 48T96T 96T*5 96T*10 96T*100
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Packages (Simulation)
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Packages (Simulation)
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Results demonstration
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Typical Standard Curve
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ISO9001: 2008, ISO13485: 2003 Registered
Specificity of the Instant ELISA Kit for Cortisol (Cor)
This assay has high sensitivity and excellent specificity for detection of Instant Cortisol (Cor).
No significant cross-reactivity or interference between Instant Cortisol (Cor) and analogues was observed.
Recovery of the Instant ELISA Kit for Cortisol (Cor)
Matrices listed below were spiked with certain level of Instant Cortisol (Cor) and the recovery rates were calculated by comparing the measured value to the expected amount of Instant Cortisol (Cor) in samples.
| Matrix | Recovery range (%) | Average(%) |
| serum(n=5) | 96-103 | 101 |
| EDTA plasma(n=5) | 99-105 | 102 |
| heparin plasma(n=5) | 84-103 | 98 |
Precision of the Instant ELISA Kit for Cortisol (Cor)
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Instant Cortisol (Cor) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Instant Cortisol (Cor) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%
Linearity of the Instant ELISA Kit for Cortisol (Cor)
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Instant Cortisol (Cor) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
| Sample | 1:2 | 1:4 | 1:8 | 1:16 |
| serum(n=5) | 79-92% | 97-105% | 80-98% | 89-96% |
| EDTA plasma(n=5) | 80-95% | 78-102% | 91-104% | 92-101% |
| heparin plasma(n=5) | 96-104% | 85-101% | 84-93% | 78-90% |
Stability of the Instant ELISA Kit for Cortisol (Cor)
The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, 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.
Assay procedure summary of the Instant ELISA Kit for Cortisol (Cor)
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.
Share and mix. Incubate 50 minutes at 37°C;
3. Aspirate and wash 3 times;
4. Add 100µL prepared Detection Reagent B. Incubate 10 minutes at 37°C;
5. Aspirate and wash 5 times;
6. Add 90µL Substrate Solution. Incubate 10-20 minutes at 37°C;
7. Add 50µL Stop Solution. Read at 450nm immediately.
Test principle of the Instant ELISA Kit for Cortisol (Cor)
This assay employs the competitive inhibition enzyme immunoassay technique. A monoclonal antibody specific to Instant Cortisol (Cor) has been pre-coated onto a microplate. A competitive inhibition reaction is launched between biotin labeled Instant Cortisol (Cor) and unlabeled Instant Cortisol (Cor) (Standards or samples) with the pre-coated antibody specific to Instant Cortisol (Cor). After incubation the unbound conjugate is washed off. Next, avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. The amount of bound HRP conjugate is reverse proportional to the concentration of Instant Cortisol (Cor) in the sample. After addition of the substrate solution, the intensity of color developed is reverse proportional to the concentration of Instant Cortisol (Cor) in the sample.
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