| 摘要 |
A test device for determining the presence of leukocyte cells, esterase or protease in a test sample is disclosed. The test device comprises a carrier matrix having a reagent composition incorporated therein, wherein the reagent composition comprises a lactate ester having the structure <IMAGE> wherein A is an alcohol blocking group, and wherein B-O- is a residue of compound B-OH and provides a detectable response when the lactate ester is hydrolyzed; and a buffer. In a preferred embodiment, the lactate ester has the structure <IMAGE> wherein X is O, S or NR2, R is aryl or lower alkyl, R1 is hydrogen or lower alkyl, and R2 is hydrogen, lower alkyl or aryl.
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