CLIA Kit for Interleukin 21 (IL21)

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  • CLIA Kit for Interleukin 21 (IL21) Packages (Simulation)
  • CLIA Kit for Interleukin 21 (IL21) Packages (Simulation)
  • CLIA Kit for Interleukin 21 (IL21) Results demonstration
  • Certificate ISO9001: 2008, ISO13485: 2003 Registered

Specificity of the CLIA Kit for Interleukin 21 (IL21)

This assay has high sensitivity and excellent specificity for detection of Interleukin 21 (IL21).
No significant cross-reactivity or interference between Interleukin 21 (IL21) and analogues was observed.

Recovery of the CLIA Kit for Interleukin 21 (IL21)

Matrices listed below were spiked with certain level of recombinant Interleukin 21 (IL21) and the recovery rates were calculated by comparing the measured value to the expected amount of Interleukin 21 (IL21) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 81-99 94
EDTA plasma(n=5) 95-104 101
heparin plasma(n=5) 93-104 98

Precision of the CLIA Kit for Interleukin 21 (IL21)

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Interleukin 21 (IL21) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Interleukin 21 (IL21) 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 Interleukin 21 (IL21)

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Interleukin 21 (IL21) 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) 78-96% 79-94% 80-101% 90-102%
EDTA plasma(n=5) 84-95% 83-98% 79-90% 78-103%
heparin plasma(n=5) 90-101% 79-101% 88-97% 95-103%

Stability of the CLIA Kit for Interleukin 21 (IL21)

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 Interleukin 21 (IL21)

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 Interleukin 21 (IL21)

The microplate provided in this kit has been pre-coated with an antibody specific to Interleukin 21 (IL21). Standards or samples are then added to the appropriate microplate wells with a biotin-conjugated antibody specific to Interleukin 21 (IL21). 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 Interleukin 21 (IL21) level in the sample or standard.;

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