A componential analyzer, comprising: a holding unit for holding a plurality of containers holding a hepatocyte; a temperature controlling unit for controlling temperatures in the plurality of containers; and an analyzing unit for measuring a component in the plurality of containers and analyzing the measured component, wherein the plurality of containers comprises at least a first container, a second container and a third container; the first container and the second container each contain a first buffer solution; the third container contains a second buffer solution comprising a reagent for removing cell-cell adhesion of the hepatocyte; the temperature controlling unit is configured to control a first temperature in the first container and in the third container and a second temperature in the second container so that the second temperature is lower than the first temperature; the analyzing unit is configured to measure: an amount of the component excreted from the hepatocyte in the first container to the first buffer solution in the first container, an amount of the component excreted from the hepatocyte in the second container to the first buffer solution in the second container, and an amount of the component excreted from the hepatocyte in the third container to the second buffer solution in the third container; and the analyzing unit is configured to analyze, based on the result measured in the measuring step, each of: an amount of the component excreted via transporters in the hepatocyte, an amount of the component excreted via a bile canaliculus formed in a cell-cell adhesion part of the hepatocyte, and an amount of the component excreted via a route other than the transporters and the bile canaliculus formed in the cell-cell adhesion part of the hepatocyte. a holding unit for holding a plurality of containers holding a hepatocyte; a temperature controlling unit for controlling temperatures in the plurality of containers; and an analyzing unit for measuring a component in the plurality of containers and analyzing the measured component, wherein the plurality of containers comprises at least a first container, a second container and a third container; the first container and the second container each contain a first buffer solution; the third container contains a second buffer solution comprising a reagent for removing cell-cell adhesion of the hepatocyte; the temperature controlling unit is configured to control a first temperature in the first container and in the third container and a second temperature in the second container so that the second temperature is lower than the first temperature; the analyzing unit is configured to measure: an amount of the component excreted from the hepatocyte in the first container to the first buffer solution in the first container, an amount of the component excreted from the hepatocyte in the second container to the first buffer solution in the second container, and an amount of the component excreted from the hepatocyte in the third container to the second buffer solution in the third container; and an amount of the component excreted from the hepatocyte in the first container to the first buffer solution in the first container, an amount of the component excreted from the hepatocyte in the second container to the first buffer solution in the second container, and an amount of the component excreted from the hepatocyte in the third container to the second buffer solution in the third container; and the analyzing unit is configured to analyze, based on the result measured in the measuring step, each of: an amount of the component excreted via transporters in the hepatocyte, an amount of the component excreted via a bile canaliculus formed in a cell-cell adhesion part of the hepatocyte, and an amount of the component excreted via a route other than the transporters and the bile canaliculus formed in the cell-cell adhesion part of the hepatocyte. an amount of the component excreted via transporters in the hepatocyte, an amount of the component excreted via a bile canaliculus formed in a cell-cell adhesion part of the hepatocyte, and an amount of the component excreted via a route other than the transporters and the bile canaliculus formed in the cell-cell adhesion part of the hepatocyte.