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Human NES1(Nesfatin 1) ELISA Kit
ELK2828
Size： Price：
48 T $320.00
96 T $458.00
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Overview

Product name: Human NES1(Nesfatin 1) ELISA Kit
Reactivity: Human
Alternative Names: Nesfatin-1
Assay Type: Competitive Inhibition
Sensitivity: 225.6 pg/mL
Standard: 50000 pg/mL
Detection Range: 781.25-50000 pg/mL
Sample Type: serum, plasma and other biological fluids
Assay Length: 2h
Research Area: Glycolipid metabolism
Test principle: This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with Human NES1. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human NES1. 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 Human NES1 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
50000.00 0.175
25000.00 0.367
12500.00 0.577
6250.00 0.833
3125.00 1.197
1562.50 1.578
781.25 1.755
0.00 2.101

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 NES1 and the recovery rates were calculated by comparing the measured value to the expected amount of NES1 in samples.
Matrix Recovery range Average
serum(n=5) 92-106% 99%
EDTA plasma(n=5) 88-103% 95%
Heparin plasma(n=5) 80-97% 88%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of NES1 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) 95-103% 79-97% 96-105% 95-103%
EDTA plasma(n=5) 85-92% 79-96% 95-103% 87-98%
Heparin plasma(n=5) 85-92% 89-101% 87-98% 85-92%