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GTD(Gastrodin) ELISA Kit
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ELK8268
Size： Price：
48 T $265.00
96 T $376.00
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Overview

Product name: GTD(Gastrodin) ELISA Kit
Reactivity: General
Alternative Names: Gastrodine
Assay Type: Competitive Inhibition
Sensitivity: 85.2 ng/mL
Standard: 20000 ng/mL
Detection Range: 312.5-20000 ng/mL
Sample type: biological agents and other biological fluids
Assay length: 2h
Research Area: Neuroscience
Test principle: This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with GTD. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to GTD. 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 GTD 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
20000.00 0.189
10000.00 0.332
5000.00 0.557
2500.00 0.846
1250.00 1.225
625.00 1.565
312.50 1.724
0.00 2.316

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 GTD and the recovery rates were calculated by comparing the measured value to the expected amount of GTD in samples.
Matrix Recovery range Average
serum(n=5) 78-95% 86%
EDTA plasma(n=5) 82-95% 88%
Heparin plasma(n=5) 95-107% 85%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of GTD 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) 88-97% 96-105% 87-103% 82-93%
EDTA plasma(n=5) 85-94% 87-96% 92-101% 82-98%
Heparin plasma(n=5) 85-94% 97-105% 87-94% 93-101%