Method for recovering microbial cells in detection sample

Provided is a method for easily and efficiently recovering microorganisms in fermented milk without affecting the state of thalli. A method for collecting microorganisms from a test sample containing fermented milk, the method comprising, in this order, (a) a step for diluting the test sample with a buffer solution so that the protein concentration is 3 mg/mL or less, (b) a step for centrifuging, and (c) a step for washing and collecting, thereby collecting microorganisms from the test sample. 本发明提供一种在不影响菌体的状态的情况下简单且高效地回收发酵乳中的微生物的方法。一种微生物的回收方法，是从含有发酵乳的检测样品中回收微生物的方法，该方法依次进行(a)使用缓冲液将检测样品以蛋白质浓度成为3mg/mL以下的方式稀释的工序、(b)离心分离的工序、以及(c)清洗回收的工序，由此从检测样品中回收微生物。