Species:
Universal
Alternative Name:
NA; NAd; Norepinephrine; Norepi
Assay Type:
Competitive
unit:
pg/mL
Standard:
5000 pg/mL
Sensitivity:
26.1 pg/mL
Detection Range:
78.13-5000 pg/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma, Cell lysates, Cell culture supernates and Other biological fluids
Research:
Signal transduction;Infection immunity;Neuro science;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 NE. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to NE. 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 NE in the samples is then determined by comparing the OD of the samples to the standard curve.
| pg/mL | OD | Corrected |
|---|---|---|
| 5000 | 0.188 | |
| 2500 | 0.326 | |
| 1250 | 0.545 | |
| 625 | 0.876 | |
| 312.5 | 1.297 | |
| 156.25 | 1.754 | |
| 78.13 | 2.063 | |
| 0 | 2.543 |
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) | 98.43 | 210.08 | 1404.49 | 102.46 | 157.23 | 1748.25 |
| Standard deviation | 10.49 | 23.18 | 72.55 | 13.05 | 28.85 | 90.3 |
| C V (%) | 6.48 | 7.44 | 3.47 | 3.87 | 5.52 | 4.6 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 85-99 | 92 |
| EDTA plasma (n=8) | 80-92 | 85 |
| Cell culture media (n=8) | 80-90 | 84 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 88-102 | 81-94 | 86-97 |
| Average (%) | 96 | 84 | 92 | |
| 1:4 | Range (%) | 96-107 | 81-94 | 80-94 |
| Average (%) | 106 | 90 | 89 | |
| 1:8 | Range (%) | 89-103 | 80-90 | 90-99 |
| Average (%) | 93 | 84 | 95 | |
| 1:16 | Range (%) | 80-95 | 83-95 | 87-103 |
| Average (%) | 80 | 85 | 100 |