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Human IFABP/FABP2(Intestinal Fatty Acid Binding Protein) ELISA Kit
ELK1264
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48 T $265.00
96 T $376.00
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OverviewPublications

Product name: Human IFABP/FABP2(Intestinal Fatty Acid Binding Protein) ELISA Kit
Reactivity: Human
Alternative Names: FABPI; IFABP; I-FABP; Intestinal-type fatty acid-binding protein; FABP2; Fatty Acid Binding Protein 2, Intestinal
Assay Type: Sandwich
Sensitivity: 0.061 ng/mL
Standard: 10 ng/mL
Detection Range: 0.16-10 ng/mL
Sample Type: serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Assay Length: 3.5h
Research Area: Metabolic pathway;Tumor immunity;Endocrinology;Cardiovascular biology;
Uniprot ID: P12104
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 Human IFABP/FABP2. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human IFABP/FABP2. 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 Human IFABP/FABP2, 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 Human IFABP/FABP2 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
10.00 2.035 1.928
5.00 1.593 1.486
2.50 1.183 1.076
1.25 0.752 0.645
0.63 0.546 0.439
0.32 0.354 0.247
0.16 0.232 0.125
0.00 0.107 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 IFABP/FABP2 and the recovery rates were calculated by comparing the measured value to the expected amount of IFABP/FABP2 in samples.
Matrix Recovery range Average
serum(n=5) 82-95% 88%
EDTA plasma(n=5) 80-95% 87%
Heparin plasma(n=5) 86-99% 92%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of IFABP/FABP2 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) 87-98% 92-105% 95-107% 82-96%
EDTA plasma(n=5) 81-94% 93-107% 93-102% 91-105%
Heparin plasma(n=5) 89-98% 81-94% 96-105% 92-103%