Test composition for the rapid detection of helicobacter pylori in gastric biopsy tissue
US5439801A · kind A · utility
26Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Feb 14, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/811
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
An improved test composition for the diagnosis of gastric disease by detecting the presence of urease associated with H. pylori in a biopsy specimen is described in which the hydrolysis of urea by urease is detected by a combination of at least two dye indicators showing a color change and a positive result at an acid pH, in which the positive color is distinctive from the color of the biopsy specimen, and in which most positive results occur in 2-10 minutes and all occur in no more than 4 hours. Specific compositions are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.