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SKU(재고 관리 코드):LMF878Hu
Magnetic Luminex Assay Kit for Secreted Frizzled Related Protein 4 (SFRP4) ,etc.
Magnetic Luminex Assay Kit for Secreted Frizzled Related Protein 4 (SFRP4) ,etc.
Product No.
LMF878Hu
Organism Species
Homo sapiens (Human).
Sample Type
Serum, plasma and other biological fluids
Test Method
Double-antibody Sandwich
Assay Length
3.5h
Detection Range
3.91-4000pg/mL
Sensitivity
The minimum detectable dose of this kit is typically less than 1.303 pg/mL.
UOM
1Plex 2Plex 3Plex 4Plex 5Plex 6Plex 7Plex 8Plex
Specificity
This assay has high sensitivity and excellent specificity for detection of Secreted Frizzled Related Protein 4 (SFRP4) ,etc..
No significant cross-reactivity or interference between Secreted Frizzled Related Protein 4 (SFRP4) ,etc. and analogues was observed.
Recovery
Matrices listed below were spiked with certain level of recombinant Secreted Frizzled Related Protein 4 (SFRP4) ,etc. and the recovery rates were calculated by comparing the measured value to the expected amount of Secreted Frizzled Related Protein 4 (SFRP4) ,etc. in samples.
| Matrix | Recovery range (%) | Average(%) |
| serum(n=5) | 78-93 | 89 |
| EDTA plasma(n=5) | 86-101 | 95 |
| heparin plasma(n=5) | 88-102 | 91 |
| sodium citrate plasma(n=5) | 83-103 | 93 |
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Secreted Frizzled Related Protein 4 (SFRP4) ,etc. were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Secreted Frizzled Related Protein 4 (SFRP4) ,etc. were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%
Linearity
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Secreted Frizzled Related Protein 4 (SFRP4) ,etc. and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
| Sample | 1:2 | 1:4 | 1:8 | 1:16 |
| serum(n=5) | 94-102% | 85-93% | 89-102% | 78-99% |
| EDTA plasma(n=5) | 80-95% | 78-96% | 78-98% | 97-105% |
| heparin plasma(n=5) | 87-94% | 99-105% | 83-103% | 80-104% |
| sodium citrate plasma(n=5) | 80-98% | 78-101% | 91-99% | 80-90% |
Stability
The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.
Reagents and materials provided
| Reagents | Quantity | Reagents | Quantity |
| 96-well plate | 1 | Plate sealer for 96 wells | 4 |
| Pre-Mixed Standard | 2 | Standard Diluent | 1×20mL |
| Pre-Mixed Magnetic beads (22#:SFRP4) | 1 | Analysis buffer | 1×20mL |
| Pre-Mixed Detection Reagent A | 1×120μL | Assay Diluent A | 1×12mL |
| Detection Reagent B (PE-SA) | 1×120μL | Assay Diluent B | 1×12mL |
| Sheath Fluid | 1×10mL | Wash Buffer (30 × concentrate) | 1×20mL |
| Instruction manual | 1 |
Assay procedure summary
1. Preparation of standards, reagents and samples before the experiment;
2. Add 100μL standard or sample to each well,
add 10μL magnetic beads, and incubate 90min at 37°C on shaker;
3. Remove liquid on magnetic frame, add 100μL prepared Detection Reagent A. Incubate 60min at 37°C on shaker;
4. Wash plate on magnetic frame for three times;
5. Add 100μL prepared Detection Reagent B, and incubate 30 min at 37°C on shaker;
6. Wash plate on magnetic frame for three times;
7. Add 100μL sheath solution, swirl for 2 minutes, read on the machine.
| Magazine | Citations |
| Endocrine Journal | Relationship between serum secreted frizzled-related protein 4 levels and the first-phase of glucose-stimulated insulin secretion in individuals with different glucose tolerance PubMed: 26041556 |
| Horm Metab Res. | Secreted Frizzled-Related Protein 4 (SFRP4) is Elevated in Patients with Diabetes Mellitus Pubmed:26882051 |
| Obesity (Silver Spring). | Reduced expression of chemerin in visceral adipose tissue associates with hepatic steatosis in patients with obesity pubmed:27768254 |
| Obesity | Longitudinal Increases in Adiposity Contribute to Worsening Adipokine Profile over Time in Mexican Americans Pubmed:29427376 |
| Novel marker for gestational diabetes patent:US20180059122A1 | |
| British Journal Of Nutrition | A diet high in sugar-sweetened beverage and low in fruits and vegetables is associated with adiposity and a pro-inflammatory adipokine profile Pubmed: 30375290 |
| American Journal of Cancer Research | SFRP4 is a prognostic marker and correlated with Treg cell infiltration in pancreatic ductal adenocarcinoma Pubmed: 30906634 |
| Diabetologia | Effects of long-term exercise on plasma adipokine levels and inflammation-related gene expression in subcutaneous adipose tissue in sedentary dysglycaemic … Pubmed: 31011777 |
| PLoS One | First trimester secreted Frizzled-Related Protein 4 and other adipokine serum concentrations in women developing gestational diabetes mellitus Pubmed: 33206702 |
| Gastric Cancer | SFRP4 drives invasion in gastric cancer and is an early predictor of recurrence 33277667 |
| Diabetology | Early Pregnancy Serum Concentration of Secreted Frizzled-Related Protein 4, Secreted Frizzled-Related Protein 5, and Chemerin in Obese Women Who Develop … |
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