48T
$299.00
96T
$399.00
Species:
Universal
Alternative Name:
HOC6H3(OCH3)CH2COOH; 3-Methoxy-4-hydroxyphenyl Acetic Acid; 4-Hydroxy-3-Methoxy-Benzeneacetic Acid; 4-Hydroxy-3-Methoxyphenylacetic Acid
Assay Type:
Competitive
unit:
ng/mL
Standard:
200 ng/mL
Sensitivity:
0.97 ng/mL
Detection Range:
3.13-200 ng/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma, Tissue homogenates, Cell lysates, Cell culture supernates and Other biological fluids
Research:
Neuroscience
Test Principle:
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with HVA. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to HVA. 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 HVA in the samples is then determined by comparing the OD of the samples to the standard curve.
| ng/mL | OD | Corrected |
|---|---|---|
| 200 | 0.191 | |
| 100 | 0.327 | |
| 50 | 0.542 | |
| 25 | 0.876 | |
| 12.5 | 1.304 | |
| 6.25 | 1.696 | |
| 3.13 | 2.072 | |
| 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) | 3.94 | 8.4 | 56.18 | 4.1 | 6.29 | 69.93 |
| Standard deviation | 0.42 | 0.93 | 2.9 | 0.52 | 1.15 | 3.61 |
| C V (%) | 4.51 | 6.86 | 4.07 | 3.85 | 4.44 | 3.84 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 82-96 | 89 |
| EDTA plasma (n=8) | 80-90 | 84 |
| Cell culture media (n=8) | 85-97 | 91 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 83-97 | 85-92 | 87-98 |
| Average (%) | 86 | 88 | 96 | |
| 1:4 | Range (%) | 86-97 | 85-92 | 82-94 |
| Average (%) | 93 | 85 | 89 | |
| 1:8 | Range (%) | 90-98 | 80-96 | 95-102 |
| Average (%) | 92 | 81 | 97 | |
| 1:16 | Range (%) | 80-93 | 92-101 | 87-103 |
| Average (%) | 88 | 97 | 89 |