48T
$299.00
96T
$399.00
Species:
Human
Alternative Name:
b-CTx, bCTXI, bCTX-I, B-Cr, BCL, Type I Collagen C-Telopeptide-Related Fraction
Assay Type:
Competitive
unit:
pg/mL
Standard:
8000pg/mL
Sensitivity:
75 pg/mL
Detection Range:
125-8000pg/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma, Tissue homogenate and Other biological samples;Sample Volume=50μL
Research:
Signal transduction;
Test Principle:
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with Human β-CTx. During the reaction, Human β-CTx in the sample or standard competes with a fixed amount of Human β-CTx on the solid phase supporter for sites on the Biotinylated Detection Ab specific to Human β-CTx. 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 β-CTx in tested samples can be calculated by comparing the OD of the samples to the standard curve.
| pg/mL | OD | Corrected |
|---|---|---|
| 8000 | 0.228 | |
| 4000 | 0.385 | |
| 2000 | 0.595 | |
| 1000 | 0.859 | |
| 500 | 1.143 | |
| 250 | 1.443 | |
| 125 | 1.777 | |
| 0 | 2.573 |
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) | 264.99 | 1158.4 | 2243.94 | 199.69 | 1846.5 | 4265.59 |
| Standard deviation | 3.6 | 84.67 | 114.63 | 13.3 | 71.93 | 131.14 |
| C V (%) | 7.1 | 3.43 | 4 | 3.59 | 7.2 | 4.08 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 84-106 | 100 |
| EDTA plasma (n=8) | 87-99 | 93 |
| Cell culture media (n=8) | 87-93 | 90 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 86-102 | 95-104 | 91-103 |
| Average (%) | 96 | 99 | 95 | |
| 1:4 | Range (%) | 87-103 | 95-104 | 83-95 |
| Average (%) | 90 | 99 | 84 | |
| 1:8 | Range (%) | 85-101 | 93-105 | 88-102 |
| Average (%) | 91 | 102 | 90 | |
| 1:16 | Range (%) | 81-99 | 82-101 | 85-97 |
| Average (%) | 93 | 82 | 95 |