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Multiplex Assay Kit for Complement Receptor 2 (CD21) ,etc. by FLIA (Flow Luminescence Immunoassay)
CR2; C3DR; Complement Component(3d/Epstein Barr Virus)Receptor 2; Complement C3d receptor; Epstein-Barr virus receptor; EBV receptor
(Note: Up to 8-plex in one testing reaction)
- Product No.LMA750Hu
- Organism SpeciesHomo sapiens (Human) Same name, Different species.
- Sample Typeserum, plasma, tissue homogenates and other biological fluids
- Test MethodDouble-antibody Sandwich
- Assay Length3.5h
- Detection Range4.88-5000pg/mL
- SensitivityThe minimum detectable dose of this kit is typically less than 1.627 pg/mL.
- DownloadInstruction Manual
- UOM 8Plex 7Plex 6Plex 5Plex 4Plex 3Plex 2Plex1Plex
- FOB
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Result
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Specificity
This assay has high sensitivity and excellent specificity for detection of Complement Receptor 2 (CD21) ,etc. by FLIA (Flow Luminescence Immunoassay).
No significant cross-reactivity or interference between Complement Receptor 2 (CD21) ,etc. by FLIA (Flow Luminescence Immunoassay) and analogues was observed.
Recovery
Matrices listed below were spiked with certain level of recombinant Complement Receptor 2 (CD21) ,etc. by FLIA (Flow Luminescence Immunoassay) and the recovery rates were calculated by comparing the measured value to the expected amount of Complement Receptor 2 (CD21) ,etc. by FLIA (Flow Luminescence Immunoassay) in samples.
| Matrix | Recovery range (%) | Average(%) |
| serum(n=5) | 92-103 | 97 |
| EDTA plasma(n=5) | 85-103 | 99 |
| heparin plasma(n=5) | 80-99 | 88 |
| sodium citrate plasma(n=5) | 95-103 | 99 |
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Complement Receptor 2 (CD21) ,etc. by FLIA (Flow Luminescence Immunoassay) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Complement Receptor 2 (CD21) ,etc. by FLIA (Flow Luminescence Immunoassay) 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 Complement Receptor 2 (CD21) ,etc. by FLIA (Flow Luminescence Immunoassay) 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) | 79-92% | 83-91% | 96-105% | 89-97% |
| EDTA plasma(n=5) | 80-97% | 84-98% | 82-91% | 78-93% |
| heparin plasma(n=5) | 90-104% | 97-104% | 97-105% | 92-105% |
| sodium citrate plasma(n=5) | 93-101% | 90-99% | 95-105% | 82-97% |
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#:CD21) | 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.
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| Magazine | Citations |
| journal of neuroinflammation | Complement receptor 2 is up regulated in the spinal cord following nerve root injury and modulates the spinal cord response PubMed: 26502875 |
| Clin Immunol | Complement Receptor 2 is increased in cerebrospinal fluid of multiple sclerosis patients and reCavia (Guinea pig )lates C3 function Pubmed:27085202 |