Detecting microbes in a sample - using specific medium contg. nutrient-indicator which is metabolised by the target microbe

摘要

A specific medium for combination with a specimen sample to determine the presence or absence of a target microbe in the specimen sample, comprises operative amts. of ingredients needed to support growth of the target microbe and a nutrient-indicator (I) which is the only nutrient in the medium which can be metabolised by the target microbe, (I) including a metabolisable moiety and a sample-altering moiety, the latter of which is released only when (I) is metabilised by the target microbe, so that a sensible characteristic of the sample is altered.