Species:
Universal
Alternative Name:
Creatinine
Assay Type:
Competitive
unit:
μg/mL
Standard:
200 μg/mL
Sensitivity:
0.89 μg/mL
Detection Range:
3.13-200 μg/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma and Other biological fluids
Research:
Signal transduction;Metabolism
Test Principle:
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with CTN. Standards or samples are added to the appropriate micro ELISA plate wells then with a biotin-conjugated antibody specific to CTN. 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 CTN in the samples is then determined by comparing the OD of the samples to the standard curve.
| μg/mL | OD | Corrected |
|---|---|---|
| 200 | 0.198 | |
| 100 | 0.334 | |
| 50 | 0.549 | |
| 25 | 0.883 | |
| 12.5 | 1.311 | |
| 6.25 | 1.703 | |
| 3.13 | 2.079 | |
| 0 | 2.519 |
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 (%) | 3.46 | 6.34 | 4.89 | 4.92 | 5.68 | 3.56 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 80-95 | 87 |
| EDTA plasma (n=8) | 86-99 | 92 |
| Cell culture media (n=8) | 80-95 | 87 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 88-97 | 84-99 | 93-101 |
| Average (%) | 96 | 94 | 101 | |
| 1:4 | Range (%) | 91-105 | 84-99 | 89-105 |
| Average (%) | 96 | 95 | 89 | |
| 1:8 | Range (%) | 87-98 | 83-101 | 87-98 |
| Average (%) | 94 | 86 | 93 | |
| 1:16 | Range (%) | 95-105 | 86-99 | 92-100 |
| Average (%) | 99 | 95 | 100 |