Patent ID: 6535836
Filing Date: 2003-03-18
Classification: G01N

Abstract:
A method for analyzing an abnormal particle population in an experimental sample containing said particles comprising the steps of:generating a particle property distribution curve of said experimental sample in a particle analysis instrument, wherein said instrument provides electrical pulse data of a property of said particle recorded as a range of channel volume numbers and pulse frequency data; and wherein a plot of pulse frequency versus channel number produces said particle property distribution curve; determining a number or percentage of particles in a micro region and/or a macro region of said particle property distribution curve, said micro region located between the beginning of the curve and a lower threshold position, said macro region located between an upper threshold position and the end of the curve; and comparing the number or percentage of particles in the micro region and/or the macro region of said curve from said experimental sample with the number or percentage of particles in the corresponding micro region and/or macro region of an average particle property distribution curve based on multiple normal samples containing normal particles.