Saliva assay method and device
US5714341A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1994 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Mar 30, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/81
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved method for determining the presence of an analyte in an oral fluid sample. A portion of the sample is mixed or contacted with a chromogenic substrate effective to produce a colored product upon reaction with .alpha.-amylase present in the sample. After a selected reaction time, the reaction mixture is inspected to determine the level of such colored product produced. Production of a level of colored product above a selected threshold within the reaction time indicates that an effective volume of undiluted oral fluid sample has been collected which is sufficient to allow detection of the analyte. A device for use in the method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.