Immunoassay element and process for immunoassay
US6589754B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 8, 1997 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Mar 15, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/54391
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An immunoassay element for quantitatively analyzing a macromolecular antigen by determining the change in enzymatic activity caused by a reaction between the macromolecular polymer antigen 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 diffusible material into a lower molecular weight product. Also provided is a process for quantitatively analyzing a macromolecular antigen in a sample by the use of the immunoassay element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.