Immunoassay element and process and immunoassay
US5569589A · kind A · utility
14Cited by
6References
21Claims
0Family size
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Inventors
Key dates
| Filing date | Dec 7, 1993 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Dec 7, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/81
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An immunoassay element for quantitatively analyzing a ligand by determining the change in enzymatic activity caused by a reaction between the ligand, a linked product of the ligand and a high molecular weight compound and an enzyme-labelled antibody. The immunoassay element comprises a substrate layer containing a non-diffusible substrate which forms a diffusible material in the presence of the enzyme, and a reagent layer containing a fragmenting enzyme for further fragmenting the non-difussible material. Also provided is a process for quantitatively analyzing a ligand contained in a sample by the use of the immunoassay element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.