Human IFN-β ELISA Kit
Key features and details
- Specification:
- Sensitivity:
- Standard Curve Range:
- Standard Curve Gradient:
- Number of Incubations:
- Sample Volume:
- Assay type:
- Operation Duration:
-
Brand:
CAT.NO. : AEH0017
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Size:
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Product Details
Background
Interferon-beta (IFN-beta) is a cytokine that is produced by fibroblasts and pathogen-exposed dendritic cells, macrophages, and endothelial cells. It signals through the heterodimeric IFN-alpha/beta Receptor. IFN-beta-deficient mice show increased susceptibility to experimental autoimmune encephalomyelitis (EAE), a disease model of human multiple sclerosis (MS). Furthermore, IFN-beta has been shown to suppress the Th17 cell response in both MS and EAE and has commonly been used as a treatment for MS.
Typical data
| pg/ml | O.D. | Average | Corrected | |
| 0.00 | 0.0103 | 0.0106 | 0.0105 | |
| 1.37 | 0.0160 | 0.0162 | 0.0161 | 0.0057 |
| 4.12 | 0.0305 | 0.0297 | 0.0301 | 0.0197 |
| 12.35 | 0.0641 | 0.0661 | 0.0651 | 0.0547 |
| 37.04 | 0.1846 | 0.1857 | 0.1852 | 0.1747 |
| 111.11 | 0.5026 | 0.5403 | 0.5215 | 0.5110 |
| 333.33 | 1.4850 | 1.5010 | 1.4930 | 1.4826 |
| 1000.00 | 3.5530 | 3.5690 | 3.5610 | 3.5506 |
Precision
| Intra-assay Precision | Inter-assay Precision | |||||
| Sample Number | S1 | S2 | S3 | S1 | S2 | S3 |
| 22 | 22 | 22 | 6 | 6 | 6 | |
| Average(pg/ml) | 50.6 | 281.6 | 638.2 | 54.7 | 293.5 | 612.2 |
| Standard Deviation | 2.7 | 14.2 | 28.7 | 2.3 | 11.4 | 35.5 |
| Coefficient of Variation(%) | 5.3 | 5.1 | 4.5 | 4.2 | 3.9 | 5.8 |
Intra-assay Precision (Precision within an assay) Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.
Inter-assay Precision (Precision between assays) Three samples of known concentration were tested six times on one plate to assess intra-assay precision.
Spike Recovery
The spike recovery was evaluated by spiking 3 levels of human IFN-β into health human serum sample. The un-spiked serum was used as blank in this experiment.
The recovery ranged from 75% to 124% with an overall mean recovery of 91%.
The recovery ranged from 75% to 124% with an overall mean recovery of 91%.
Sample Values
| Sample Matrix | Sample Evaluated | Range (pg/ml) | Detectable (%) | Mean of Detectable (pg/ml) |
| Serum | 30 | n.d.-2.08 | 0.53 | 1.03 |
Serum/Plasma – Thirty samples from apparently healthy volunteers were evaluated for the presence of IFN-β in this assay. No medical histories were available for the donors.
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