Species:
Universal
Alternative Name:
LX-A4
Assay Type:
Competitive
unit:
pg/mL
Standard:
40000 pg/mL
Sensitivity:
175.4 pg/mL
Detection Range:
625-40000 pg/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma, Tissue homogenates, Cell culture supernates and Other biological fluids
Research:
Signal transduction;Metabolic pathway;Infection immunity;
Test Principle:
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with LXA4. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to LXA4. 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 LXA4 in the samples is then determined by comparing the OD of the samples to the standard curve.
| pg/mL | OD | Corrected |
|---|---|---|
| 40000 | 0.27 | |
| 20000 | 0.433 | |
| 10000 | 0.673 | |
| 5000 | 0.99 | |
| 2500 | 1.283 | |
| 1250 | 1.603 | |
| 625 | 1.873 | |
| 0 | 2.695 |
Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level were tested on 3 different plates, 20 replicates in each plate, respectively.
| Intra-assay Precision | Inter-assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 20 | 20 | 20 | 20 | 20 | 20 |
| Mean(ng/mL) | 787.4 | 1680.67 | 11235.96 | 819.67 | 1257.86 | 13986.01 |
| Standard deviation | 83.9 | 185.42 | 580.37 | 104.44 | 230.8 | 722.42 |
| C V (%) | 5.04 | 6.38 | 5.64 | 5.52 | 7.1 | 2.27 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 87-95 | 91 |
| EDTA plasma (n=8) | 96-107 | 102 |
| Cell culture media (n=8) | 80-96 | 87 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 95-103 | 88-98 | 85-94 |
| Average (%) | 98 | 90 | 87 | |
| 1:4 | Range (%) | 87-98 | 88-98 | 95-103 |
| Average (%) | 96 | 95 | 102 | |
| 1:8 | Range (%) | 85-92 | 87-103 | 80-97 |
| Average (%) | 87 | 101 | 80 | |
| 1:16 | Range (%) | 80-96 | 89-97 | 93-102 |
| Average (%) | 86 | 92 | 93 |