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Goat ET-1(Endothelin1) ELISA Kit
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ELK7451
Size： Price：
48 T $412.00
96 T $588.00
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Overview

Product name: Goat ET-1(Endothelin1) ELISA Kit
Reactivity: Goat
Alternative Names: ET1; PPET1; Preproendothelin-1; Big endothelin-1; EDN1
Assay Type: Sandwich
Sensitivity: 4.79 pg/mL
Standard: 1000 pg/mL
Detection Range: 15.63-1000 pg/mL
Sample type: Serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Assay length: 3.5h
Research Area: Endocrinology;Cardiovascular biology;
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 Goat ET-1. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Goat ET-1. 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 Goat ET-1, 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 Goat ET-1 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
1000.00 2.256 2.170
500.00 1.770 1.684
250.00 1.283 1.197
125.00 0.835 0.749
62.50 0.541 0.455
31.25 0.363 0.277
15.63 0.212 0.126
0.00 0.086 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 ET-1 and the recovery rates were calculated by comparing the measured value to the expected amount of ET-1 in samples.
Matrix Recovery range Average
serum(n=5) 81-96% 88%
EDTA plasma(n=5) 78-94% 86%
Heparin plasma(n=5) 90-103% 96%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of ET-1 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) 92-105% 92-101% 80-94% 86-101%
EDTA plasma(n=5) 88-102% 86-92% 91-103% 89-97%
Heparin plasma(n=5) 85-94% 92-101% 87-96% 82-90%