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ELK Biotechnology

ELK5700

Dog EDN1(Endothelin 1) ELISA Kit

Dog EDN1(Endothelin 1) ELISA Kit

$588.00 USD
$588.00 USD
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Size
Sensitivity
Detection range

Dog EDN1(Endothelin 1) ELISA Kit

Overview

Product name: Dog ET-1(Endothelin1) ELISA Kit
Reactivity: Dog
Alternative Names: ET1; PPET1; Preproendothelin-1; Big endothelin-1; EDN1
Assay Type: Sandwich
Sensitivity: 2.57 pg/mL
Standard: 500 pg/mL
Range: 7.82-500 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 Dog ET-1. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Dog 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 Dog 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 Dog ET-1 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
500.00 1.946 1.864
250.00 1.522 1.440
125.00 1.251 1.169
62.50 0.897 0.815
31.25 0.456 0.374
15.63 0.364 0.282
7.82 0.256 0.174
0.00 0.082 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) 89-107% 98%
EDTA plasma(n=5) 82-95% 88%
Heparin plasma(n=5) 86-96% 91%

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) 79-91% 89-103% 82-95% 86-99%
EDTA plasma(n=5) 86-99% 93-107% 85-94% 87-101%
Heparin plasma(n=5) 86-97% 88-95% 92-101% 87-98%
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