Measurement apparatus and analysis method

A measurement apparatus operable to analyze a plurality of blood cells contained in a blood specimen, comprising:

• at least one reagent container configured to store at least one type of reagent that contains first and second fluorescent dyes, wherein the first and second fluorescent dyes are optically interrogated to respectively emit first and second fluorescent lights at different peak wavelengths;
• a mixing chamber configured for mixing therein of the blood specimen with the at least one type of reagent for preparation of a measurement sample, wherein the measurement sample includes blood cells including first and second cellular components stained, respectively, with the first and second fluorescent dyes;
• a reagent feeder configured to feed the at least one type of reagent from the at least one reagent container to the mixing chamber via a reagent feeding tube provided between the at least one reagent container and the mixing chamber;
• a detector formed with a plurality of light detectors configured to measure non-fluorescent and fluorescent lights from optically interrogated blood cells in the measurement sample, wherein measuring fluorescent lights comprises measuring the first and second fluorescent lights excited out at the different peak wavelengths from the stained first and second cellular components of the optically interrogated blood cells, and wherein the measured first and second fluorescent lights respectively carry first and second sets of fluorescence information indicative of cellular features of the stained first and second cellular components, respectively, of the optically interrogated blood cells;
• and
• an analyzer programmed to analyze the first and second sets of fluorescence information to perform CBC (Complete Blood Count) and/or a white blood cell classification that classifies white blood cells in the optically interrogated blood cells into multiple subpopulations, including lymphocyte, monocyte, eosinophil, neutrophil and basophil, of the white blood cells.