Mini Samples ELISA Kit for Leptin (LEP)
OB; OBS; Obesity Homolog; Obesity Factor; Obese Protein
- Product No.MEA084Ra
- Organism SpeciesRattus norvegicus (Rat) Same name, Different species.
- Test MethodDouble-antibody Sandwich
- Assay Length3h
- Detection Range0.312-20ng/mL
- SensitivityThe minimum detectable dose of this kit is typically less than 0.122ng/mL.
- Sample TypeSerum, plasma, tissue homogenates, cell lysates, cell culture supernates 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 Mini Samples ELISA Kit for Leptin (LEP)
This assay has high sensitivity and excellent specificity for detection of Mini Samples Leptin (LEP).
No significant cross-reactivity or interference between Mini Samples Leptin (LEP) and analogues was observed.
Recovery of the Mini Samples ELISA Kit for Leptin (LEP)
Matrices listed below were spiked with certain level of recombinant Mini Samples Leptin (LEP) and the recovery rates were calculated by comparing the measured value to the expected amount of Mini Samples Leptin (LEP) in samples.
| Matrix | Recovery range (%) | Average(%) |
| serum(n=5) | 81-93 | 85 |
| EDTA plasma(n=5) | 79-102 | 85 |
| heparin plasma(n=5) | 82-96 | 88 |
Precision of the Mini Samples ELISA Kit for Leptin (LEP)
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Mini Samples Leptin (LEP) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Mini Samples Leptin (LEP) 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 Mini Samples ELISA Kit for Leptin (LEP)
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Mini Samples Leptin (LEP) 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) | 97-105% | 85-101% | 99-105% | 83-97% |
| EDTA plasma(n=5) | 79-93% | 92-101% | 92-99% | 79-89% |
| heparin plasma(n=5) | 99-105% | 80-98% | 78-105% | 79-101% |
Stability of the Mini Samples ELISA Kit for Leptin (LEP)
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 Mini Samples ELISA Kit for Leptin (LEP)
1. Prepare all reagents, samples and standards;
2. Add 25µL standard or sample to each well. Incubate 1 hour at 37°C;
3. Aspirate and add 25µL prepared Detection Reagent A. Incubate 1 hour at 37°C;
4. Aspirate and wash 3 times;
5. Add 25µL prepared Detection Reagent B. Incubate 30 minutes at 37°C;
6. Aspirate and wash 5 times;
7. Add 25µL Substrate Solution. Incubate 10-20 minutes at 37°C;
8. Add 20µL Stop Solution. Read at 450nm immediately.
Test principle of the Mini Samples ELISA Kit for Leptin (LEP)
The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Mini Samples Leptin (LEP). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to Mini Samples Leptin (LEP). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Mini Samples Leptin (LEP), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Mini Samples Leptin (LEP) in the samples is then determined by comparing the O.D. of the samples to the standard curve.
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