Patent ID: 8017078

Claim:
A blood cell analyzer comprising: a first detection unit for electrically detecting blood cells in a blood sample; a second detection unit for optically detecting blood cells in the blood sample; a volume information obtainer for obtaining volume information of red blood cells based on the electrically detected blood cells by the first detection unit; a scattered light intensity information obtainer for obtaining a scattered light intensity of red blood cells based on the optically detected blood cells by the second detection unit; a first histogram preparer for preparing a first histogram of the volume information of the red blood cells obtained by the volume information obtainer; a second histogram preparer for preparing a second histogram of the scattered light intensity information of the red blood cells obtained by the scattered light intensity information obtainer; a display unit; and a data processor for preparing a screen for displaying on the display unit, the screen including the first and second histograms prepared by the first and second histogram preparer that are displayed side by side for comparison, the data processor calculates first and second threshold values of volume displayed on the first histogram and calculates third and fourth threshold values of scattered light intensity displayed on the second histogram wherein the data processor calculates a percentage of red blood cells which have volume information that is less than the first threshold value relative to all red blood cells (MicroR), a percentage of red blood cells which have volume information that is greater than the second threshold value relative to all red blood cells (MacroR), a percentage of red blood cells which have scattered light intensity information that is less than the third threshold value relative to all red blood cells (LScRBC), and a percentage of red blood cells which have scattered light intensity information that is greater than the fourth threshold value relative to all red blood cells (HScRBC).