Species:
Universal
Alternative Name:
LT-A4
Assay Type:
Competitive
unit:
pg/mL
Standard:
10000 pg/mL
Sensitivity:
46.3 pg/mL
Detection Range:
156.25-10000 pg/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma, Tissue homogenates, Cell culture supernates and Other biological fluids
Research:
Metabolic pathway;Infection immunity;Autoimmunity;
Test Principle:
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with LTA4. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to LTA4. 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 LTA4 in the samples is then determined by comparing the OD of the samples to the standard curve.
| pg/mL | OD | Corrected |
|---|---|---|
| 10000 | 0.267 | |
| 5000 | 0.367 | |
| 2500 | 0.561 | |
| 1250 | 0.822 | |
| 625 | 1.117 | |
| 312.5 | 1.512 | |
| 156.25 | 1.826 | |
| 0 | 2.49 |
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) | 196.85 | 420.17 | 2808.99 | 204.92 | 314.47 | 3496.5 |
| Standard deviation | 20.98 | 46.36 | 145.09 | 26.11 | 57.7 | 180.6 |
| C V (%) | 4.71 | 7.48 | 4.6 | 4.88 | 5.2 | 2.82 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 82-95 | 88 |
| EDTA plasma (n=8) | 88-102 | 95 |
| Cell culture media (n=8) | 95-107 | 101 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 95-103 | 80-95 | 82-97 |
| Average (%) | 102 | 83 | 88 | |
| 1:4 | Range (%) | 80-96 | 80-95 | 88-105 |
| Average (%) | 93 | 80 | 99 | |
| 1:8 | Range (%) | 87-98 | 96-103 | 80-93 |
| Average (%) | 93 | 97 | 85 | |
| 1:16 | Range (%) | 85-92 | 83-101 | 87-98 |
| Average (%) | 87 | 97 | 97 |