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Rat GHRL(Ghrelin) ELISA Kit
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ELK6912
Size： Price：
48 T $320.00
96 T $458.00
96 T*5 $1947.00
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Overview

Product name: Rat GHRL(Ghrelin) ELISA Kit
Reactivity: Rat
Alternative Names: MTLRP; Preproghrelin; Growth Hormone Secretagogue Receptor Ligand; Appetite-regulating hormone; Growth hormone-releasing peptide; Motilin-related peptide
Assay Type: Competitive Inhibition
Sensitivity: 9.85 pg/mL
Standard: 2000 pg/mL
Detection Range: 31.25-2000 pg/mL
Sample Type: Serum, plasma and other biological fluids
Assay Length: 2h
Research Area: Endocrinology;
Uniprot ID: Q9QYH7
Test principle: This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with Rat GHRL. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Rat GHRL. 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 Rat GHRL 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
2000.00 0.215
1000.00 0.336
500.00 0.451
250.00 0.899
125.00 1.139
62.50 1.537
31.25 1.733
0.00 2.028

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 GHRL and the recovery rates were calculated by comparing the measured value to the expected amount of GHRL in samples.
Matrix Recovery range Average
serum(n=5) 86-98% 92%
EDTA plasma(n=5) 95-107% 101%
Heparin plasma(n=5) 83-95% 86%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of GHRL 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) 85-103% 82-96% 87-98% 93-101%
EDTA plasma(n=5) 88-102% 86-92% 91-103% 89-97%
Heparin plasma(n=5) 88-101% 79-92% 85-93% 89-97%