Immunoassay method
US6964872B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2002 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | May 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/54333
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
When insoluble magnetic carrier particles are used in immunoassay, a method is provided which is suitable for saving labor and for treating a large number of samples within a short time while avoiding problems including difficulties in the stability of sensitized insoluble magnetic particles and in their preparation. In assaying an antigenic substance in test samples, no use is made of insoluble magnetic particles carrying an antibody specific to the said antigenic substance but insoluble magnetic carrier particles are provided in a state free from adsorbing said antibody, etc. Then the antigenic substance per se to be assayed is adsorbed on the insoluble magnetic carrier particles followed by reaction with a labeled antibody specific to the said adsorbed antigenic substance. Thus, the antigenic substance in the test sample can be efficiently assayed in a mode suitable for automation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.