Species:
Universal
Alternative Name:
TXA2
Assay Type:
Competitive
unit:
pg/mL
Standard:
1000 pg/mL
Sensitivity:
4.39 pg/mL
Detection Range:
15.63-1000 pg/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma and Other biological fluids
Research:
Signal transduction;Infection immunity;Endocrinology;Hormone metabolism;
Test Principle:
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with TXA2. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to TXA2. 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 TXA2 in the samples is then determined by comparing the OD of the samples to the standard curve.
| pg/mL | OD | Corrected |
|---|---|---|
| 1000 | 0.289 | |
| 500 | 0.389 | |
| 250 | 0.583 | |
| 125 | 0.844 | |
| 62.5 | 1.139 | |
| 31.25 | 1.534 | |
| 15.63 | 1.848 | |
| 0 | 2.512 |
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) | 19.69 | 42.02 | 280.9 | 20.49 | 31.45 | 349.65 |
| Standard deviation | 2.1 | 4.64 | 14.51 | 2.61 | 5.77 | 18.06 |
| C V (%) | 3.49 | 7.64 | 5.3 | 3.38 | 7.66 | 2.52 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 84-103 | 96 |
| EDTA plasma (n=8) | 82-96 | 87 |
| Cell culture media (n=8) | 86-97 | 92 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 95-102 | 89-99 | 95-105 |
| Average (%) | 97 | 95 | 99 | |
| 1:4 | Range (%) | 98-106 | 89-99 | 86-97 |
| Average (%) | 100 | 90 | 96 | |
| 1:8 | Range (%) | 87-98 | 88-104 | 83-96 |
| Average (%) | 92 | 90 | 91 | |
| 1:16 | Range (%) | 91-102 | 84-98 | 91-103 |
| Average (%) | 101 | 87 | 94 |