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
in which A 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.
一种组合物和测试装置,用于确定测试样品中是否存在选自白细胞、
酯酶和
蛋白酶的分析物。该组合物包括能在与所述分析物作用时产生可检测反应的酯,以及具有以下结构的重氮盐
其中 A 是阴离子,R 相同或不同,是 H、低级烷基、芳基或两个 R 共同形成一个融合环系统,R'是 H、OH 或低级烷基。