Analysis method, microorganism identification method, and testing method

An analysis method comprising:

• a sample preparing step of preparing a sample containing microorganisms;
• a first-data obtaining step of obtaining a first data by placing the microorganisms contained in the sample under a first condition and then performing a first mass spectrometry on a substance produced by the microorganisms;
• a second-data obtaining step of obtaining a second data by placing microorganisms of a same type as the microorganisms contained in the sample under a second condition and then performing a second mass spectrometry on a substance produced by the same type of microorganisms;
• a reference-data preparing step of preparing a reference data in which a classification or a characteristic of each of a plurality of types of microorganisms is associated with a data obtained in a mass spectrometry of a substance produced by the each of the plurality of types of microorganisms;
• and
• an information obtaining step of obtaining information on characteristics or classifications of the microorganisms contained in the sample on a basis of a difference between the first data and the second data as well as the reference data,
• wherein
• the first condition and the second condition differ in a sugar concentration or an oxygen concentration in a condition under which the microorganisms are placed.