Total Carbonyl Colorimetric Assay Kit
Total Carbonyl Colorimetric Assay Kit
| SKU # | E-BC-K171-S |
| Detection Instrument | Spectrophotometer (370 nm) |
| Detection method | Colorimetric method |
Product Details
Properties
| Sample Type | Serum, plasma, tissue |
| Sensitivity | 0.94 μg/mL |
| Detection Range | 0.94-45 μg/mL |
| Detection Method | Colorimetric method |
| Assay type | Quantitative |
| Assay time | 50 min |
| Precision | Average inter-assay CV: 8.300% | Average intra-assay CV: 4.400% |
| Other instruments required | Micropipettor, Vortex mixer |
| Other reagents required | Normal saline (0.9% NaCl), PBS (0.01 M, pH 7.4) |
| Storage | 2-8℃ |
| Valid period | 12 months |
Detection Principle
Carbonyl can react with 2,4-dinitrophenylhydrazine and produce a kind of reddish brown hydrazone compounds, which has a specific absorbance peak at 370 nm. The content of carbonyl can be calculated according to the absorbance value.
Dilution of Sample
The recommended dilution factor for different samples is as follows (for reference only):
| Total carbonyl content (μg/mL) | Dilution factor |
| ＜45 | 1 |
| 45-50 | 10 |
Note: The diluent is normal saline (0.9% NaCl) or PBS (0.01 M, pH 7.4). For the dilution of other sample types, please do pretest to confirm the dilution factor.
Kit Components & Storage
| Item | Component | Size 1 (50 assays) |
Size 2 (100 assays) |
Storage |
| Reagent 1 | Working Solution | 15 mL × 1 vial | 30 mL × 1 vial | 2-8°C, 12 months, shading light |
| Reagent 2 | 100 µg/mL Standard | 1 mL × 1 vial | 2 mL × 1 vial | 2-8°C, 12 months |
Note: The reagents must be stored strictly according to the preservation conditions in the above table. The reagents in different kits cannot be mixed with each other. For a small volume of reagents, please centrifuge before use, so as not to obtain sufficient amount of reagents.
Technical Data:
Parameter:
Intra-assay Precision
Three human serum samples were assayed in replicates of 20 to determine precision within an assay. (CV = Coefficient of Variation)
| Parameters | Sample 1 | Sample 2 | Sample 3 |
| Mean (μg/mL) | 4.60 | 18.50 | 36.20 |
| %CV | 4.7 | 4.2 | 4.3 |
Inter-assay Precision
Three human serum samples were assayed 20 times in duplicate by three operators to determine precision between assays.
| Parameters | Sample 1 | Sample 2 | Sample 3 |
| Mean (μg/mL) | 4.60 | 18.50 | 36.20 |
| %CV | 8.3 | 8.1 | 8.5 |
Recovery
Take three samples of high concentration, middle concentration and low concentration to test the samples of each concentration for 6 times parallelly to get the average recovery rate of 100%.
| Standard 1 | Standard 2 | Standard 3 | |
| Expected Conc. (μg/mL) | 12.5 | 26.8 | 39.2 |
| Observed Conc. (μg/mL) | 12.6 | 28.1 | 36.8 |
| Recovery rate (%) | 101 | 105 | 94 |
Sensitivity
The analytical sensitivity of the assay is 0.94 μg/mL. This was determined by adding two standard deviations to the mean O.D. obtained when the zero standard was assayed 20 times, and calculating the corresponding concentration.
Standard Curve
As the OD value of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique or temperature effects), so the standard curve and data are provided as below for reference only.
| Concentration (μg/mL) | 0 | 5 | 10 | 20 | 30 | 40 | 45 |
| Average OD | 0.358 | 0.375 | 0.395 | 0.434 | 0.473 | 0.511 | 0.525 |
| Absoluted OD | 0 | 0.017 | 0.037 | 0.076 | 0.115 | 0.153 | 0.167 |