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Cattle IL1a(Interleukin 1 Alpha) ELISA Kit
ELK6243
Size： Price：
48 T $412.00
96 T $588.00
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Overview

Product name: Cattle IL1a(Interleukin 1 Alpha) ELISA Kit
Reactivity: Cattle
Alternative Names: IL1 Alpha; IL1-A; IL-1α; IL1F1; Preinterleukin 1 Alpha; Hematopoietin-1; Pro-Interleukin-1-Alpha; Interleukin-1 Family Member 1
Assay Type: Sandwich
Sensitivity: 6.4 pg/mL
Standard: 1000 pg/mL
Detection Range: 15.63-1000 pg/mL
Sample Type: Serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Assay Length: 3.5h
Research Area: Cytokine;Apoptosis;
Uniprot ID: P08831
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 Cattle IL1a. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Cattle IL1a. 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 Cattle IL1a, 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 Cattle IL1a 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
1000.00 2.052 1.971
500.00 1.586 1.505
250.00 1.196 1.115
125.00 0.871 0.790
62.50 0.475 0.394
31.25 0.315 0.234
15.63 0.190 0.109
0.00 0.081 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 IL1a and the recovery rates were calculated by comparing the measured value to the expected amount of IL1a in samples.
Matrix Recovery range Average
serum(n=5) 87-93% 90%
EDTA plasma(n=5) 81-95% 88%
Heparin plasma(n=5) 79-93% 86%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of IL1a 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) 85-102% 79-92% 87-103% 89-98%
EDTA plasma(n=5) 89-97% 86-95% 81-93% 91-103%
Heparin plasma(n=5) 85-97% 90-99% 82-101% 93-105%