Immunoassays in capillaries
US5624850A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1994 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jun 6, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/0346
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Immunoassay methods employing capillary containers are provided. The immunoassays may be competitive or sandwich immunoassays, where fluorescently labeled conjugates are used. Sample suspected of containing analyte is combined with fluorescently labeled conjugate, as well as any additional reactants which may be required. At least a portion of the incubated sample is placed in a capillary container. The capillary container has, on at least one region of its inner surface, a binding member capable of complexing with the fluorescently labeled conjugate, either directly or indirectly. Fluorescently labeled conjugate not complexed to binding member is then washed from the capillary container. The complexed fluorescently labeled conjugate is detected by irradiating the capillary and measuring the emitted signal. The intensity of the emitted signal is indicative of the presence of analyte in the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.