A test subject takes a component collection tool with his/her fingers, and rolls the tool between pads of the fingers several times to transfer components attached on a skin surface to a surface of the tool. The component collection tool is immersed in a predetermined solvent to allow the components on the skin surface to be dissolved in the solvent. Bligh-Dyer method may be used therefor, for example. From a liquid in which lipid or others are thus collected, a sample for analysis using MALDI-MS or LDI-MS is prepared and subjected to the analysis. Accordingly, components on the skin surface of the test subject can be efficiently collected and subjected to analysis with burden on the test subject being reduced.
