Patent · US Expired

Composition and test device for determining the presence of leukocytes containing a zwitterion coupling agent

US4637979A · kind A · utility

30Cited by

13References

15Claims

0Family size

Assignee

Miles Laboratories, Inc. · US

Inventors

A. Christopher Skjold · Elkhart, US
Herbert Hugl
Gerhard Wolfrum · Waldershof, DE

Key dates

Filing date	Apr 6, 1984
Grant date	Jan 20, 1987
Priority date	—
Expiry date	Apr 6, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S436/903
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

A composition and test device for determining the presence of an analyte selected from leukocytes, esterase and protease in a test sample. The composition comprises an ester capable of producing a detectable response upon interaction with said analyte, and a diazonium salt having the structure ##STR1## in which A.sup.- is an anion, and R same or differ, is H, lower alkyl, aryl, or both of R together form a fused ring system, and in which R' is H, OH or lower alkyl.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.