Patent ID: 8399259

Claim:
A method for measuring concentrations of first and second analytes contained in a sample utilizing a measuring device, comprising the following steps (A) to (F): a step (A) of preparing an analysis utilizing the measuring device, wherein the measuring device comprises a tubular first container and a tubular second container; a longitudinal direction of the tubular first container is in parallel with a longitudinal direction of the tubular second container, the tubular first container is formed integrally with and adjacently to the tubular second container, one end of the measuring device comprises a first sample supply inlet and a second sample supply inlet which communicate with the tubular first container and the tubular second container respectively, the other end of the measuring device comprises a sucking port which communicates with the tubular second container and an air vent which communicates with the tubular first container, a pair of electrodes are provided in the tubular first container, and a reagent for optical measurement is provided in the tubular second container, a step (B) of immersing the first sample supply inlet and the second sample supply inlet with the sample to suck the sample into the tubular first container through the first sample supply inlet with capillarity after the step (A), a step (C) of determining whether the sample is sucked into the tubular first container or not, and sucking the sample from the second sample supply inlet toward the sucking port to supply the sample into the tubular second container if the sample is sucked into the tubular first container after the step (B), a step (D) of measuring the concentration of the first analyte contained in the sample sucked into the tubular first container with the pair of electrodes, a step (E) of dissolving the reagent with the sample supplied into the tubular second container, and a step (F) of irradiating the sample dissolving the reagent to measure the concentration of the second analyte contained in the sample dissolving the reagent after the step (E).