Specimen slide for occult blood testing
US4486536A · kind A · utility
71Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Aug 19, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/726
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and novel absorbent substrate for determining the presence of occult blood in gastric fluid. The substrate is acid treated and contains guaiac. The method includes the addition of the gastric fluid to the acid treated guaiac substrate which is developed with a buffered developing solution. Preferably the substrate is an acid treated sheet of absorbent paper and the developing solution is an aqueous buffered solution of hydrogen peroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.