Patent ID: 7601539

Claim:
A method for judging an abnormal portion in a particle analyzer which comprises a measuring sample preparation unit for preparing a measuring sample by mixing a biological sample with a first fluorescence dye, a light source for irradiating the measuring sample with light and a fluorescence detector for detecting fluorescence from the measuring sample, comprising steps of: detecting first fluorescence from first standard particles and second fluorescence from second standard particles by using the particle analyzer; and first comparing the first fluorescence with a first condition corresponding to expected fluorescence of said first standard particles defined by predetermined upper and lower limit values; and second comparing the second fluorescence with a second condition corresponding to expected fluorescence of said second standard particles defined by predetermined upper and lower limit values; and judging the abnormal portion in the particle analyzer based upon the first fluorescence and the second fluorescence; wherein the first standard particles can be fluorescence-stained by the fluorescence staining treatment, and wherein the second standard particles have preliminarily contained a fluorescence dye; and wherein the judging step judges the abnormality in the fluorescence detector based upon the second comparison result and judges the abnormality in the sample preparation unit based upon the first comparison result and the second comparison result; and wherein the abnormalities correspond to values outside said predetermined upper and lower limit values.