Diagnostic device for fecal occult blood and method of use
US4333734A · kind A · utility
61Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 8, 1980 |
| Grant date | Jun 8, 1982 |
| Priority date | — |
| Expiry date | Oct 8, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Q2326/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Diagnostic test device for fecal occult blood utilizing a test matrix such as paper impregnated with guaiac. False-positive results in the presence of peroxidases are prevented by adding to the matrix a compound that cleaves protein hydrogen bonds such as guanidine hydrochloride and a chelating agent that binds calcium and/or magnesium such as EDTA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.