Lablisa® Human IgA(Immunoglobulin A) ELISA Kit
Product Information
- Description
- More Infomation
The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Immunoglobulin A(IgA). Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Immunoglobulin A(IgA). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Immunoglobulin A(IgA), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Immunoglobulin A(IgA) in the samples is then determined by comparing the OD of the samples to the standard curve.
| Product name: | Human IgA(Immunoglobulin A) ELISA Kit |
| Reactivity: | Human |
| Alternative Names: | Immunoglobulin A |
| Assay Type: | Sandwich |
| Sensitivity: | 0.07 ug/mL |
| Standard: | 100 ug/mL |
| Sample type: | serum, plasma, saliva and other biological fluids |
| Assay length: | 3.5h |
| Research Area: | Infection immunity;Immune molecule;Hematology;Pulmonology; |
Standard curve
| Concentration (ng/mL) | OD | Corrected OD |
|---|---|---|
| 100.00 | 2.214 | 2.141 |
| 50.00 | 1.636 | 1.563 |
| 25.00 | 1.139 | 1.066 |
| 12.50 | 0.975 | 0.902 |
| 6.25 | 0.532 | 0.459 |
| 3.13 | 0.342 | 0.269 |
| 1.57 | 0.241 | 0.168 |
| 0.00 | 0.073 | 0.000 |
Intra-assay Precision (Precision within an assay)：CV%<8%
Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.
Inter-assay Precision (Precision between assays)：CV%<10%
Three samples of known concentration were tested in forty separate assays to assess inter-assay precision.
Recovery
Matrices listed below were spiked with certain level of recombinant IgA and the recovery rates were calculated by comparing the measured value to the expected amount of IgA in samples.
| Matrix | Recovery range | Average |
|---|---|---|
| serum(n=5) | 80-95% | 87% |
| EDTA plasma(n=5) | 85-97% | 91% |
| Heparin plasma(n=5) | 92-107% | 99% |
| Matrix | 1:2 | 1:4 | 1:8 | 1:16 |
|---|---|---|---|---|
| serum(n=5) | 81-97% | 88-102% | 85-93% | 83-97% |
| EDTA plasma(n=5) | 87-98% | 85-92% | 79-96% | 89-100% |
| Heparin plasma(n=5) | 83-94% | 80-92% | 86-102% | 87-103% |
Manuals on the web are for your reference only, specifications are subject to the delivery manuals.
