48T
$299.00
96T
$399.00
Species:
Rat
Alternative Name:
Androstenolone sulfate; Prasterone sulfate; Androst-5-en-3β-ol-17-one 3β-sulfate
Assay Type:
Competitive
unit:
pg/mL
Standard:
2000pg/mL
Sensitivity:
18.75 pg/mL
Detection Range:
31.25-2000pg/mL
Assay Time:
1.5H
Sample Type:
Serum, Plasma, Tissue homogenate and Other biological samples;Sample Volume=50μL
Research:
Endocrinology;Hepatology;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 Rat DHEA-S. During the reaction, Rat DHEA-S in the sample or standard competes with a fixed amount of Rat DHEA-S on the solid phase supporter for sites on the Biotinylated Detection Ab specific to Rat DHEA-S. 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 Rat DHEA-S in tested samples can be calculated by comparing the OD of the samples to the standard curve.
| pg/mL | OD | Corrected |
|---|---|---|
| 2000 | 0.197 | |
| 1000 | 0.333 | |
| 500 | 0.548 | |
| 250 | 0.882 | |
| 125 | 1.31 | |
| 62.5 | 1.702 | |
| 31.25 | 2.078 | |
| 0 | 2.518 |
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) | 9.51 | 480.11 | 934.06 | 110.21 | 518.99 | 828.74 |
| Standard deviation | 5.22 | 21.94 | 30.69 | 5.53 | 21.53 | 43.86 |
| C V (%) | 3.32 | 3.05 | 6.23 | 4.32 | 6.25 | 6.68 |
| Sample Type | Range(%) | Average Recovery(%) |
|---|---|---|
| Serum (n=8) | 88-102 | 95 |
| EDTA plasma (n=8) | 80-92 | 85 |
| Cell culture media (n=8) | 80-97 | 88 |
| Serum (n=5) | EDTA plasma (n=5) | Cell culture media (n=5) | ||
|---|---|---|---|---|
| 1:2 | Range (%) | 95-104 | 86-95 | 85-94 |
| Average (%) | 99 | 93 | 87 | |
| 1:4 | Range (%) | 82-94 | 91-106 | 87-101 |
| Average (%) | 91 | 94 | 90 | |
| 1:8 | Range (%) | 86-96 | 87-100 | 89-99 |
| Average (%) | 94 | 93 | 98 | |
| 1:16 | Range (%) | 81-97 | 95-101 | 85-95 |
| Average (%) | 89 | 96 | 85 |