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ELK Biotechnology

ELK9568

Sheep VCAM1(Vascular Cell Adhesion Molecule 1) ELISA Kit

Sheep VCAM1(Vascular Cell Adhesion Molecule 1) ELISA Kit

Sensitivity

Sheep VCAM1(Vascular Cell Adhesion Molecule 1) ELISA Kit

Overview

Product name: Sheep VCAM1(Vascular Cell Adhesion Molecule 1) ELISA Kit
Reactivity: Sheep
Alternative Names: CD106; INCAM-100; L1CAM
Assay Type: Sandwich
Sensitivity: 30 pg/mL
Standard: 5000 pg/mL
Detection Range: 78.13-5000 pg/mL
Sample Type: Serum, plasma, tissue homogenates and other biological fluids
Assay Length: 3.5h
Research Area: CD & Adhesion molecule;Tumor immunity;Infection immunity;
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 Sheep VCAM1. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Sheep VCAM1. 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 Sheep VCAM1, 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 Sheep VCAM1 in the samples is then determined by comparing the OD of the samples to the standard curve.

Standard curve

Concentration (ng/mL) OD Corrected OD
5000.00 1.948 1.859
2500.00 1.720 1.631
1250.00 1.225 1.136
625.00 0.871 0.782
312.50 0.518 0.429
156.25 0.319 0.230
78.13 0.226 0.137
0.00 0.089 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 VCAM1 and the recovery rates were calculated by comparing the measured value to the expected amount of VCAM1 in samples.
Matrix Recovery range Average
serum(n=5) 92-107% 99%
EDTA plasma(n=5) 83-96% 89%
Heparin plasma(n=5) 82-98% 90%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of VCAM1 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) 93-101% 79-96% 89-100% 85-96%
EDTA plasma(n=5) 87-99% 85-96% 81-95% 95-105%
Heparin plasma(n=5) 88-102% 93-101% 90-101% 87-98%
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