Method of correction of particle interference to hemoglobin measurement

A method of correction of particle interference to hemoglobin measurement of a blood sample on a hematology analyzer is provided. The method includes mixing an aliquot of a blood sample with a lytic reagent to lyse red blood cells and forming a sample mixture; measuring absorbance of the sample mixture at a predetermined wavelength of a hemoglobin chromogen formed in the sample mixture, and obtaining an apparent hemoglobin concentration of the blood sample using obtained absorbance; measuring concentration and size of cellular particles remaining in the sample mixture; removing contribution of the cellular particles to the apparent hemoglobin concentration using the concentration and the size of the cellular particles to obtain a corrected hemoglobin concentration of the blood sample; and reporting the corrected hemoglobin concentration of the blood sample.