Abstract: Disclosed is a cell classification method, to be executed by an analyzer, for classifying cells contained in a specimen, including: preparing a first measurement sample by treating a specimen under a first preparation condition; obtaining a first signal from the prepared first measurement sample; classifying, by using the first signal, cells contained in the first measurement sample; preparing a second measurement sample by treating the specimen under a second preparation condition different from the first preparation condition; obtaining a second signal from the prepared second measurement sample; classifying, by using the second signal, cells contained in the second measurement sample; and comparing a result of the cell classification performed by using the first signal and a result of the cell classification performed by using the second signal, with each other, and outputting an analysis result including a number of cells on the basis of a result of the comparison.

Abstract: Disclosed is a hemolytic reagent comprising a nonionic surfactant represented by formula (I) below: R1—R2—(CH2CH2O)n—H ??(I) where R1 represents an alkyl group, an alkenyl group, or an alkynyl group having 8 or more and 25 or less carbon atoms, R2 represents an oxygen atom, (COO) or a group represented by formula (II) below: where n is 23 or larger and 25 or smaller, or 30, with n of 23 or larger and 25 or smaller, a concentration of the nonionic surfactant is 1700 ppm or higher and 2300 ppm or lower, and with n of 30, the concentration of the nonionic surfactant is 1900 ppm or higher and 2300 ppm or lower.

Abstract: Disclosed is a cell classification method, to be executed by an analyzer, for classifying cells contained in a specimen, including: preparing a first measurement sample by treating a specimen under a first preparation condition; obtaining a first signal from the prepared first measurement sample; classifying, by using the first signal, cells contained in the first measurement sample; preparing a second measurement sample by treating the specimen under a second preparation condition different from the first preparation condition; obtaining a second signal from the prepared second measurement sample; classifying, by using the second signal, cells contained in the second measurement sample; and comparing a result of the cell classification performed by using the first signal and a result of the cell classification performed by using the second signal, with each other, and outputting an analysis result including a number of cells on the basis of a result of the comparison.