CLIA Kit for Tumor Necrosis Factor Alpha (TNFa)
DIF; TNF-A; TNFSF2; Cachectin; Tumor Necrosis Factor Ligand Superfamily Member 2
- Product No.SCA133Ra
- Organism SpeciesRattus norvegicus (Rat) Same name, Different species.
- Test MethodDouble-antibody Sandwich
- Assay Length2h, 40min
- Detection Range1.37-1,000pg/mL
- SensitivityThe minimum detectable dose of this kit is typically less than 0.50pg/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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FOB
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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 CLIA Kit for Tumor Necrosis Factor Alpha (TNFa)
This assay has high sensitivity and excellent specificity for detection of Tumor Necrosis Factor Alpha (TNFa).
No significant cross-reactivity or interference between Tumor Necrosis Factor Alpha (TNFa) and analogues was observed.
Recovery of the CLIA Kit for Tumor Necrosis Factor Alpha (TNFa)
Matrices listed below were spiked with certain level of recombinant Tumor Necrosis Factor Alpha (TNFa) and the recovery rates were calculated by comparing the measured value to the expected amount of Tumor Necrosis Factor Alpha (TNFa) in samples.
| Matrix | Recovery range (%) | Average(%) |
| serum(n=5) | 88-99 | 91 |
| EDTA plasma(n=5) | 88-103 | 99 |
| heparin plasma(n=5) | 94-105 | 101 |
Precision of the CLIA Kit for Tumor Necrosis Factor Alpha (TNFa)
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Tumor Necrosis Factor Alpha (TNFa) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Tumor Necrosis Factor Alpha (TNFa) 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 CLIA Kit for Tumor Necrosis Factor Alpha (TNFa)
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Tumor Necrosis Factor Alpha (TNFa) 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) | 86-103% | 91-101% | 94-101% | 97-105% |
| EDTA plasma(n=5) | 93-105% | 90-98% | 87-94% | 93-101% |
| heparin plasma(n=5) | 87-104% | 95-105% | 80-95% | 86-94% |
Stability of the CLIA Kit for Tumor Necrosis Factor Alpha (TNFa)
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 CLIA Kit for Tumor Necrosis Factor Alpha (TNFa)
1. Prepare all reagents, samples and standards;
2. Add 100µL standard or sample to each well. Incubate 1 hours at 37°C;
3. Aspirate and add 100µL prepared Detection Reagent A. Incubate 1 hour at 37°C;
4. Aspirate and wash 3 times;
5. Add 100µL prepared Detection Reagent B. Incubate 30 minutes at 37°C;
6. Aspirate and wash 5 times;
7. Add 100µL Substrate Solution. Incubate 10 minutes at 37°C;
8. Read RLU value immediately.
Test principle of the CLIA Kit for Tumor Necrosis Factor Alpha (TNFa)
The microplate provided in this kit has been pre-coated with an antibody specific to Tumor Necrosis Factor Alpha (TNFa). Standards or samples are then added to the appropriate microplate wells with a biotin-conjugated antibody specific to Tumor Necrosis Factor Alpha (TNFa). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Then the mixture of substrate A and B is added to generate glow light emission kinetics. Upon plate development, the intensity of the emitted light is proportional to the Tumor Necrosis Factor Alpha (TNFa) level in the sample or standard.;
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