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Rat CD200(Cluster Of Differentiation 200) Microsample ELISA Kit
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ELK8789MS
Size： Price：
48 T $320.00
96 T $458.00
96 T*5 $1947.00
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Overview

Product name: Rat CD200(Cluster Of Differentiation 200) Microsample ELISA Kit
Reactivity: Rat
Alternative Names: MOX1; MOX2; MRC; OX-2; My033; Antigen Identified By Monoclonal Antibody MRC OX-2
Assay Type: Sandwich
Sensitivity: 18.71 pg/mL
Standard: 3000 pg/mL
Detection Range: 46.88-3000 pg/mL
Sample Type: Serum, plasma and other biological fluids
Assay Length: 3.5h
Research Area: CD & Adhesion molecule;Tumor immunity;Infection immunity;Immune molecule;
Uniprot ID: P04218
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 Rat CD200. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Rat CD200. 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 Rat CD200, 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 Rat CD200 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
3000.00 1.942 1.855
1500.00 1.617 1.530
750.00 1.176 1.089
375.00 0.893 0.806
187.50 0.527 0.440
93.75 0.355 0.268
46.88 0.187 0.100
0.00 0.087 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 CD200 and the recovery rates were calculated by comparing the measured value to the expected amount of CD200 in samples.
Matrix Recovery range Average
serum(n=5) 87-116% 102%
EDTA plasma(n=5) 81-112% 97%
Heparin plasma(n=5) 92-109% 101%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of CD200 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) 89-104% 84-119% 88-115% 90-115%
EDTA plasma(n=5) 88-112% 88-117% 81-107% 92-104%
Heparin plasma(n=5) 90-116% 86-120% 88-119% 91-103%

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