Whole blood analyses in porous media
US4250257A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1978 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Aug 24, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/110833
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for analyzing whole blood samples which feature impregnating a gel medium used for the analysis of the whole blood sample with an inert substance. When the whole blood sample is placed on the gel medium, the inert substance diffuses from the gel as the plasma solutes of the blood diffuse into the gel. The amount of the inert substance diffusing from the gel medium is inversely proportional to the hematocrit of the blood sample. In one embodiment, plasma solutes are caused to react with one or more reagents in the gel medium to assay various specific analytes. Also, the hematocrit, indicated by the diffusion rate of the inert substance from the gel, is determined and used to correct such assay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.