ELISA Kit for Cutaneous T-Cell Attracting Chemokine (CTACK)

CCL27; ILC; SCYA27; ALP; Skinkine; ESkine; PESKY; CTAK; Chemokine(C-C-Motif)ligand 27; Small Inducible Cytokine Subfamily A Member 27; IL-11 R-alpha-locus chemokine

FOR IN VITRO AND RESEARCH USE ONLY, NOT FOR USE IN CLINICAL DIAGNOSTIC PROCEDURES!
  • ELISA Kit for Cutaneous T-Cell Attracting Chemokine (CTACK)Packages (Simulation)
  • ELISA Kit for Cutaneous T-Cell Attracting Chemokine (CTACK)Packages (Simulation)
  • ELISA Kit for Cutaneous T-Cell Attracting Chemokine (CTACK)Results demonstration
  • SEB651Hu.jpgTypical Standard Curve
  • CertificateISO9001: 2008, ISO13485: 2003 Registered

Specificity

This assay has high sensitivity and excellent specificity for detection of Cutaneous T-Cell Attracting Chemokine (CTACK).
No significant cross-reactivity or interference between Cutaneous T-Cell Attracting Chemokine (CTACK) and analogues was observed.

Recovery

Matrices listed below were spiked with certain level of recombinant Cutaneous T-Cell Attracting Chemokine (CTACK) and the recovery rates were calculated by comparing the measured value to the expected amount of Cutaneous T-Cell Attracting Chemokine (CTACK) in samples.

MatrixRecovery range (%)Average(%)
serum(n=5)96-10599
EDTA plasma(n=5)78-9990
heparin plasma(n=5)81-9085

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Cutaneous T-Cell Attracting Chemokine (CTACK) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Cutaneous T-Cell Attracting Chemokine (CTACK) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Cutaneous T-Cell Attracting Chemokine (CTACK) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample1:21:41:81:16
serum(n=5)86-101%93-101%87-99%88-99%
EDTA plasma(n=5)78-102%86-93%80-95%95-105%
heparin plasma(n=5)93-101%90-98%81-103%89-96%

Stability

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.

Reagents and materials provided

ReagentsQuantityReagentsQuantity
Pre-coated, ready to use 96-well strip plate1Plate sealer for 96 wells4
Standard2Standard Diluent1×20mL
Detection Reagent A1×120µLAssay Diluent A1×12mL
Detection Reagent B1×120µLAssay Diluent B1×12mL
TMB Substrate1×9mLStop Solution1×6mL
Wash Buffer (30 × concentrate)1×20mLInstruction manual1

Assay procedure summary

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 90µL Substrate Solution. Incubate 10-20 minutes at 37°C;
8. Add 50µL Stop Solution. Read at 450nm immediately.

ELISA Kit for Cutaneous T-Cell Attracting Chemokine (CTACK)

Test principle

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 Cutaneous T-Cell Attracting Chemokine (CTACK). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to Cutaneous T-Cell Attracting Chemokine (CTACK). 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 Cutaneous T-Cell Attracting Chemokine (CTACK), 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 Cutaneous T-Cell Attracting Chemokine (CTACK) in the samples is then determined by comparing the O.D. of the samples to the standard curve.

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