Species:
Universal
Alternative Name:
ALD
Assay Type:
Competitive
unit:
pg/mL
Standard:
2000 pg/mL
Sensitivity:
9.41 pg/mL
Detection Range:
31.25-2000 pg/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma and Other biological fluids
Research:
Metabolic pathway;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 ALD. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to ALD. 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 ALD in the samples is then determined by comparing the OD of the samples to the standard curve.
| pg/mL | OD | Corrected |
|---|---|---|
| 2000 | 0.193 | |
| 1000 | 0.329 | |
| 500 | 0.544 | |
| 250 | 0.878 | |
| 125 | 1.306 | |
| 62.5 | 1.698 | |
| 31.25 | 2.074 | |
| 0 | 2.514 |
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 (%) | 6.55 | 7.62 | 4.8 | 5.83 | 7.16 | 4.69 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 90-105 | 97 |
| EDTA plasma (n=8) | 80-95 | 87 |
| Cell culture media (n=8) | 83-95 | 89 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 80-91 | 86-97 | 92-105 |
| Average (%) | 81 | 97 | 93 | |
| 1:4 | Range (%) | 89-103 | 86-97 | 87-98 |
| Average (%) | 90 | 88 | 95 | |
| 1:8 | Range (%) | 82-95 | 90-98 | 85-92 |
| Average (%) | 92 | 97 | 91 | |
| 1:16 | Range (%) | 86-99 | 80-93 | 80-96 |
| Average (%) | 94 | 87 | 95 |