A measuring device for analyzing an analyte contained in a sample. The device includes a hollow housing, a sample holding part provided inside the housing for holding the sample, a sample supply inlet provided for the housing so as to communicate with the sample holding part, an optical measurement part provided for the sample holding part for making an optical measurement, a reagent holding part provided for the sample holding part for holding a reagent for the optical measurement, and at least one electrode provided on an outer surface of the housing.