48T
$299.00
96T
$399.00
Species:
Human
Alternative Name:
CTX3
Assay Type:
Competitive
unit:
ng/mL
Standard:
10ng/mL
Sensitivity:
0.1 ng/mL
Detection Range:
0.16-10ng/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma, Tissue homogenate and Other biological samples;Sample Volume=50μL
Research:
Enzyme & Kinase;
Test Principle:
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with Human CTX-Ⅲ. During the reaction, Human CTX-Ⅲ in the sample or standard competes with a fixed amount of Human CTX-Ⅲ on the solid phase supporter for sites on the Biotinylated Detection Ab specific to Human CTX-Ⅲ. Excess conjugate and unbound sample or standard are washed away, and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well and incubated. Then a TMB substrate solution is added to each well. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns from blue to yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of Human CTX-Ⅲ in tested samples can be calculated by comparing the OD of the samples to the standard curve.
| ng/mL | OD | Corrected |
|---|---|---|
| 10 | 0.301 | |
| 5 | 0.401 | |
| 2.5 | 0.595 | |
| 1.25 | 0.856 | |
| 0.63 | 1.151 | |
| 0.32 | 1.546 | |
| 0.16 | 1.86 | |
| 0 | 2.524 |
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) | 0.17 | 1.94 | 3.32 | 0.2 | 1.45 | 4.19 |
| Standard deviation | 0.01 | 0.11 | 0.25 | 0.01 | 0.12 | 0.16 |
| C V (%) | 3.12 | 4.08 | 4.5 | 6.14 | 5.13 | 6.53 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 85-103 | 94 |
| EDTA plasma (n=8) | 95-105 | 100 |
| Cell culture media (n=8) | 93-101 | 97 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 89-97 | 85-94 | 82-98 |
| Average (%) | 90 | 89 | 88 | |
| 1:4 | Range (%) | 85-94 | 85-94 | 87-91 |
| Average (%) | 88 | 94 | 91 | |
| 1:8 | Range (%) | 87-96 | 87-96 | 85-93 |
| Average (%) | 93 | 93 | 89 | |
| 1:16 | Range (%) | 85-97 | 92-101 | 89-97 |
| Average (%) | 94 | 93 | 93 |