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Rabbit ET-1(Endothelin1) ELISA Kit
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ELK2432
Size： Price：
48 T $412.00
96 T $588.00
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Overview

Product name: Rabbit ET-1(Endothelin1) ELISA Kit
Reactivity: Rabbit
Alternative Names: ET1; PPET1; Preproendothelin-1; Big endothelin-1; EDN1
Assay Type: Sandwich
Sensitivity: 2.76 pg/mL
Standard: 500 pg/mL
Detection 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;
Uniprot ID: P29560
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 Rabbit ET-1. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Rabbit 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 Rabbit 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 Rabbit 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
500.00 2.268 2.175
250.00 1.647 1.554
125.00 1.035 0.942
62.50 0.833 0.740
31.25 0.614 0.521
15.63 0.369 0.276
7.82 0.197 0.104
0.00 0.093 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) 78-92% 85%
EDTA plasma(n=5) 80-95% 87%
Heparin plasma(n=5) 78-96% 87%

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) 85-97% 87-96% 86-98% 91-103%
EDTA plasma(n=5) 87-90% 87-98% 85-96% 85-95%
Heparin plasma(n=5) 87-98% 85-96% 92-102% 81-93%