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ELK Biotechnology

ELK9551

Guinea pig ADMA(Asymmetrical Dimethylarginine) ELISA Kit

Guinea pig ADMA(Asymmetrical Dimethylarginine) ELISA Kit

Sensitivity

Guinea pig ADMA(Asymmetrical Dimethylarginine) ELISA Kit

Overview

Product name: Guinea pig ADMA(Asymmetrical Dimethylarginine) ELISA Kit
Reactivity: Guinea pig
Alternative Names: N,N-Dimethylarginine; NG,NG-Dimethylarginine dihydrochloride; Asymmetric Dimethylarginine
Assay Type: Competitive Inhibition
Sensitivity: 4.51 ng/mL
Standard: 1000 ng/mL
Detection Range: 15.63-1000 ng/mL
Sample Type: serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Assay Length: 2h
Research Area: Metabolic pathway;Cardiovascular biology;
Test principle: This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with Guinea pig ADMA protein. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Guinea pig ADMA. 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 Guinea pig ADMA 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
1000.00 0.197 —
500.00 0.427 —
250.00 0.612 —
125.00 0.993 —
62.50 1.135 —
31.25 1.592 —
15.63 1.887 —
0.00 2.325 —

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 ADMA and the recovery rates were calculated by comparing the measured value to the expected amount of ADMA in samples.
Matrix Recovery range Average
serum(n=5) 90-105% 97%
EDTA plasma(n=5) 85-97% 91%
Heparin plasma(n=5) 94-107% 100%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of ADMA 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) 87-96% 85-93% 82-90% 79-96%
EDTA plasma(n=5) 89-100% 91-102% 87-96% 97-105%
Heparin plasma(n=5) 95-102% 89-97% 87-95% 95-102%
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