Species:
Universal
Alternative Name:
MDA
Assay Type:
Competitive
unit:
ng/mL
Standard:
2000 ng/mL
Sensitivity:
9.15 ng/mL
Detection Range:
31.25-2000 ng/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma and Other biological fluids
Research:
Metabolic pathway;Hepatology;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 MDA. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to MDA. 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 MDA in the samples is then determined by comparing the OD of the samples to the standard curve.
| ng/mL | OD | Corrected |
|---|---|---|
| 2000 | 0.195 | |
| 1000 | 0.331 | |
| 500 | 0.546 | |
| 250 | 0.88 | |
| 125 | 1.308 | |
| 62.5 | 1.7 | |
| 31.25 | 2.076 | |
| 0 | 2.516 |
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) | 39.37 | 84.03 | 561.8 | 40.98 | 62.89 | 699.3 |
| Standard deviation | 4.2 | 9.27 | 29.02 | 5.22 | 11.54 | 36.12 |
| C V (%) | 5.37 | 4.31 | 2.75 | 5.8 | 4.27 | 4.62 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 88-99 | 93 |
| EDTA plasma (n=8) | 86-98 | 92 |
| Cell culture media (n=8) | 82-98 | 87 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 83-94 | 85-93 | 87-99 |
| Average (%) | 90 | 91 | 95 | |
| 1:4 | Range (%) | 80-92 | 85-93 | 82-96 |
| Average (%) | 81 | 86 | 86 | |
| 1:8 | Range (%) | 86-102 | 80-96 | 85-96 |
| Average (%) | 96 | 90 | 91 | |
| 1:16 | Range (%) | 87-103 | 93-106 | 87-101 |
| Average (%) | 87 | 103 | 90 |