Description
Boster’s human CD21 ELISA Kit was based on standard sandwich enzyme-linked immune-sorbent assay technology. A monoclonal antibody from mouse specific for CD21 has been precoated onto 96-well plates. Standards(CHO, Ile21-71) and test samples are added to the wells, a biotinylated detection polyclonal antibody from goat specific for CD21 is added subsequently and then followed by washing with PBS or TBS buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with PBS or TBS buffer. HRP substrate TMB was used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the human CD21 amount of sample captured in plate.
Synonyms: C3DR|CD 21|CD21|CD21 antigen|Complement C3d receptor|Complement component (3d/Epstein Barr virus) receptor 2|Complement component receptor 2|Complement receptor type 2|Cr 2|CR|Cr2|CR2_HUMAN|CVID7|EBV receptor|EBV-R|Epstein Barr virus receptor|Epstein-Barr virus receptor|EVBR|SLEB9
Species: human CD21
Assay: 0.78ng/ml-50ng/ml
Sensitivy: <20pg/ml Specifity: Natural and recombinant human CD21
Cross Reactivity: There is no detectable cross-reactivity with other relevant proteins.
Antibodies: a monoclonal antibody from mouse|a biotinylated polyclonal antibody from goat
Anticoagulant: heparin or EDTA
Immunogen: CHO, Ile21-71
Gene name: Complement receptor type 2 / complement component (3d/Epstein Barr virus) receptor 2
Protein name: Complement receptor type 2
Storage: Store at 4˚C for 6 months, at -20˚C for 12 months. Avoid multiple freeze-thaw cycles(Shipped with wet ice.)
|Intra-Assay Precision|Inter-Assay Precision
Sample|1|2|3|1|2|3
n|16|16|16|24|24|24
Mean(pg/ml)|1242|7916|24012|1177|7910|25042
Standard deviation|70.79|372.05|1296.64|89.45|411.32|1627.73
CV(%)|5.7%|4.7%|5.4%|7.6%|5.2%|6.5%
Reproducibility
To assay reproducibility, three samples with differing target protein concentrations were assayed using four different lots.
| Lots | Lot1 (pg/ml) | Lot2 (pg/ml) | Lot3 (pg/ml) | Lot4 (pg/ml) | Mean (pg/ml) | Standard Deviation | CV (%) |
|---|---|---|---|---|---|---|---|
| Sample 1 | 1242 | 1468 | 1273 | 1362 | 1336 | 87.89 | 6.5% |
| Sample 2 | 7916 | 7621 | 6548 | 6832 | 7229 | 558.34 | 7.7% |
| Sample 3 | 24012 | 23247 | 26467 | 22418 | 24036 | 1512.51 | 6.2% |
*number of samples for each test n=16.
Catalog number|Description|Quantity
EK1315-CAP|96-well plate precoated with anti- human CD21 antibody|1
EK1315-ST|Lyophilized recombinant human CD21 standard|50ng/tube×2
EK1315-DA|Biotinylated anti- human CD21 antibody|130μl(dilution 1:100)
AR1103|Avidin-Biotin-Peroxidase Complex (ABC)|130μl(dilution 1:100)
AR1106-1|Sample diluent buffer|30ml
AR1106-2|Antibody diluent buffer|12ml
AR1106-3|ABC diluent buffer|12ml
AR1104|TMB color developing agent|10ml
AR1105|TMB stop solution|10ml
PLA-SEA|Adhesive cover|4
