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Human VSIG2(V-Set And Immunoglobulin Domain Containing Protein 2) ELISA Kit
ELK6648
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48 T $320.00
96 T $458.00
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Overview

Product name: Human VSIG2(V-Set And Immunoglobulin Domain Containing Protein 2) ELISA Kit
Reactivity: Human
Alternative Names: CTXL; CTH; Cortical thymocyte-like protein
Assay Type: Competitive Inhibition
Sensitivity: 152.5 pg/mL
Standard: 40000 pg/mL
Detection Range: 625-40000 pg/mL
Sample Type: Tissue homogenates and other biological fluids.
Assay Length: 2h
Research Area: Signal transduction;
Uniprot ID: Q96IQ7
Test principle: This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with Human VSIG2 protein. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human VSIG2. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added. 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 Human VSIG2 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
40000.00 0.219
20000.00 0.427
10000.00 0.715
5000.00 0.959
2500.00 1.257
1250.00 1.565
625.00 1.861
0.00 2.197

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 VSIG2 and the recovery rates were calculated by comparing the measured value to the expected amount of VSIG2 in samples.
Matrix Recovery range Average
serum(n=5) 93-101% 97%
EDTA plasma(n=5) 85-103% 94%
Heparin plasma(n=5) 95-105% 88%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of VSIG2 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) 85-92% 89-96% 78-98% 90-99%
EDTA plasma(n=5) 95-103% 79-92% 97-105% 89-97%
Heparin plasma(n=5) 93-102% 97-103% 91-99% 90-98%