Gold sol immunoassay system and device
US5334538A · kind A · utility
14Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1992 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Jan 9, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/81
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new apparatus and method for immunoassays. A gold sol bead is held in a funnel member. First antibodies are associated with the gold sol bead. When the sample contacts the gold sol it dissolves the bead. A second antibody is impregnated on an immunosorbent surface. When the dissolved gold sol passes this surface, any antigen already reacted with the first antibody present reacts with the second antibody forming a gold: first antibody: antigen: second antibody: immunosorbent complex. The gold sol acts as the visible label.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.