Particle agglutination immunoassay apparatus
US4913883A · kind A · utility
55Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Jul 20, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N35/0098
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The degree of agglutination is measured in a magnetic manner instead of optical manner. Microparticles are composed of a magnetic material and the agglutinated condition is measured using a magnetometer. The sizes and distribution of agglutinated materials formed by the antigen-antibody coupling reaction can be correctly measured without affected by light-scattering materials such as proteins or blood cells contained in the specimen, or by absorbant such as pigment, or by fluorescent material. Therefore, the concentration of antigen is measured maintaining high precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.