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Acid Phosphatase (ACP) Activity Assay Kit
SKU: E-BC-K094-S-500
Acid Phosphatase (ACP) Activity Assay Kit
| SKU # | E-BC-K094-S |
| Detection Instrument | Spectrophotometer (520 nm) |
| Detection Method | Colorimetric method |
Product Details
Properties
| Synonyms | ACP |
| Sample Type | Serum, plasma, urine, tissue, cells |
| Sensitivity | 0.27 U/100 mL |
| Detection Range | 0.27-40 U/100 mL |
| Detection Method | Colorimetric method |
| Assay type | Enzyme Activity |
| Assay time | 70 min |
| Precision | Average inter-assay CV: 7.100% | Average intra-assay CV: 2.800% |
| Other instruments required | Micropipettor, Incubator, Vortex mixer, Centrifuge |
| Other reagents required | Normal saline (0.9% NaCl), PBS (0.01 M, pH 7.4) |
| Storage | 2-8℃ |
| Valid period | 12 months |
Dilution of Sample
It is recommended to take 2~3 samples with expected large difference to do pre-experiment before formal experiment and dilute the sample according to the result of the pre-experiment and the detection range (0.27-40 U/100 mL).
The recommended dilution factor for different samples is as follows (for reference only):
| Sample type | Dilution factor |
| Human milk | 1 |
| Human saliva | 1 |
| Human urine | 1 |
| Human serum | 1 |
| HepG2 cells homogenization | 2-8 |
| 10% Mouse kidney tissue homogenization | 8-12 |
| 10% Mouse liver tissue homogenization | 8-12 |
| 10% Mouse spleen tissue homogenization | 8-12 |
Note: The diluent is normal saline (0.9% NaCl) or PBS (0.01 M, pH 7.4).
Detection Principle
Acid phosphatase decomposes disodium phenyl phosphate under acidic conditions to produce free phenol and phosphoric acid. Phenol acts with 4-aminoantipyrine in alkaline solution, and oxidizes to a derivative of red quinone by potassium ferricyanide. The activity of the ACP can be calculated by measuring the OD value at 520 nm.
Kit Components & Storage
| Item | Component | Size (100 Assays) | Storage |
| Reagent 1 | Buffer Solution | 60 mL ×1 vial | 2-8℃, 12 months |
| Reagent 2 | Substrate Solution | 60 mL × 1 vial | 2-8℃, 12 month shading light |
| Reagent 3 | Alkali Reagent | 60 mL × 2 vials | 2-8℃, 12 month shading light |
| Reagent 4 | Chromogenic Agent | 60 mL × 3 vials | 2-8℃, 12 month shading light |
| Reagent 5 | 1.0 mg/mL Phenol Standard | 1 mL × 1 vial | 2-8℃, 12 month shading light |
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 (U/100 mL) | 2.80 | 16.50 | 32.40 |
| %CV | 2.9 | 2.6 | 2.9 |
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 (U/100 mL) | 2.80 | 16.50 | 32.40 |
| %CV | 7.0 | 6.9 | 7.4 |
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%.
| Sample 1 | Sample 2 | Sample 3 | |
| Expected Conc. (U/100 mL) | 10.8 | 22.5 | 35.5 |
| Observed Conc. (U/100 mL) | 10.7 | 22.1 | 36.6 |
| Recovery rate (%) | 99 | 98 | 103 |
Sensitivity
The analytical sensitivity of the assay is 0.27 U/100 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 (mg/mL) | 0 | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | 1 |
| Average OD | 0.018 | 0.206 | 0.396 | 0.772 | 1.110 | 1.491 | 1.817 |
| Absoluted OD | 0 | 0.188 | 0.378 | 0.754 | 1.092 | 1.473 | 1.799 |