Reduction in first slide bias and improved enzyme stability by the incorporation of diaryl tellurides in thin-film immunoassay elements
US5686254A · kind A · utility
1Cited by
17References
11Claims
0Family size
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Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/97
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dry immunoassay analytical element for assaying a ligand, comprising a support bearing: PA1 1. an enzyme labeled ligand or an enzyme labeled receptor zone; PA1 2. a spreading zone; and PA1 3. a receptor zone containing a fixed concentration of an immobilized receptor for the ligand and the labeled ligand when present and the receptor is covalently bonded to polymeric beads having a diameter in the range of 0.1 to 5 .mu.m; characterized in that the element contains a diaryl telluride (DAT) compound and the zones can be in the same or separate layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.