Provided is a method for preparing a sugar chain, including: a labeling step of adding a labeling reagent to a sugar chain-containing sample which contains a sugar chain to obtain a labeled product containing a labeled substance of the sugar chain, in which a reaction environment of the labeling reagent and the sugar chain contains water in the labeling step.
本发明提供了一种制备糖链的方法,包括:在含有糖链的样品中加入标记试剂以获得含有糖链标记物质的标记产品的标记步骤,在标记步骤中,标记试剂和糖链的反应环境中含有
水。