In order to carry out DNA analysis etc. with a microchip, it was required to prepare sample solution in advance with an apparatus different from a controlling apparatus for the microchip. Herein, there is provided a microchip contributing to reduce operator' operation. The microchip comprises a cell accepting section, a lysis solution chamber and a lysis reaction chamber. The cell accepting section accepts cells obtained from a subject. The lysis solution chamber stores lysis solution for lysis of the cells. The lysis reaction of the cells is executed in the lysis reaction chamber.