Method, apparatus and system for detecting and determining comprised reagent pads by quantifying color changes induced by exposure to a hostile environment
US12146878B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2023 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Aug 1, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reagent test paddle includes a contamination detection medium, a reference color bar, at least one chemical test medium, and a unique identifier. The contamination detection medium includes a reagent that changes color in the presence or when exposed to a hostile or inhospitable environment. Each chemical test medium includes a regent that is responsive to a respective analyte in a biological sample. The reference color bar includes reference color samples of different colors. The unique identifier, like a serial number, identifies the particular paddle and its chemical test medium so it can be uniquely and anonymously associated with a user. A method includes capturing and interpreting digital images of a biologically unexposed and subsequently exposed reagent test paddle at various delay times within an automatically calibrated environment; locating the paddle in a plurality of digital images, extracting the reference color bar and locating the contamination detection medium and chemical test medium in each digital image. Color changes of the chemical test medium and contamination medium are detected at various delay times after sample exposure. To determine validity of test re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.