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Cat CXCR4(Chemokine C-X-C-Motif Receptor 4) ELISA Kit
ELK0535
Size： Price：
48 T $320.00
96 T $458.00
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Overview

Product name: Cat CXCR4(Chemokine C-X-C-Motif Receptor 4) ELISA Kit
Reactivity: Cat
Alternative Names: CD184; Fusin; NPYR; HSY3RR; LAP3; LCR1; LESTR; NPY3R; NPYRL; WHIM; Leukocyte-derived seven transmembrane domain receptor; Lipopolysaccharide-associated protein 3
Assay Type: Sandwich
Sensitivity: 36.8 pg/mL
Standard: 5000 pg/mL
Detection Range: 78.13-5000 pg/mL
Sample Type: tissue homogenates, cell lysates and other biological fluids
Assay Length: 3.5h
Research Area: Signal transduction;CD & Adhesion molecule;Tumor immunity;Infection immunity;
Uniprot ID: P56498
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 Cat CXCR4. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Cat CXCR4. 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 Cat CXCR4, 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 Cat CXCR4 in the samples is then determined by comparing the OD of the samples to the standard curve.

Standard curve

Concentration (pg/mL) OD Corrected OD
5000.00 2.255 2.173
2500.00 1.703 1.621
1250.00 1.116 1.034
625.00 0.896 0.814
312.50 0.532 0.450
156.25 0.345 0.263
78.13 0.225 0.143
0.00 0.082 0.000

Precision

Intra-assay Precision (Precision within an assay)：CV%<8%

Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.

Inter-assay Precision (Precision between assays)：CV%<10%

Three samples of known concentration were tested in forty separate assays to assess inter-assay precision.

Recovery

Matrices listed below were spiked with certain level of recombinant CXCR4 and the recovery rates were calculated by comparing the measured value to the expected amount of CXCR4 in samples.
Matrix Recovery range Average
serum(n=5) 87-99% 93%
EDTA plasma(n=5) 85-97% 91%
Heparin plasma(n=5) 90-103% 96%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of CXCR4 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Matrix 1:2 1:4 1:8 1:16
serum(n=5) 85-93% 87-96% 79-91% 95-103%
EDTA plasma(n=5) 86-98% 93-106% 89-97% 85-94%
Heparin plasma(n=5) 93-102% 87-96% 85-98% 91-103%