Abstract: Provided are a sample analyzer and a sample analysis method. The sample analyzer includes: a sampling apparatus configured to collect a blood sample; a sample preparation apparatus configured to mix the blood sample with a hemolytic agent and a dye to prepare a test sample liquid; an optical detection apparatus configured to detect side-scattered light signals and fluorescence signals generated by particles in the test sample liquid; and a processor configured to: generate a scatter diagram based on at least the side-scattered light signals and the fluorescence signals, and obtain a predetermined feature region, wherein an intensity of side-scattered light corresponding to a central position of the predetermined feature region is greater than an intensity of side-scattered light corresponding to a central position of a region containing neutrophil granulocyte population; and obtain a blast cell parameter based on the predetermined feature region.

Abstract: The present invention relates to a blood cell analyzer, which includes a sample aspiration device used for aspirating a blood sample of a subject to be tested, a sample preparation device used for preparing a test sample, an optical detection device used for testing the test sample to obtain optical information, and a processor. The processor obtains from first optical information of a first test sample a first leukocyte parameter of a first target particle population in the first test sample; obtains from second optical information of a second test sample a second leukocyte parameter of a second target particle population in the second test sample, the first or second leukocyte parameters including a cell characteristic parameter; and on the basis of the first leukocyte parameter and the second leukocyte parameter, obtains an infection marker parameter for evaluating an infection state of the subject, and outputs the infection marker parameter.

Abstract: The present invention relates to a blood cell analyzer, a method, and a use of an infection marker parameter. The blood cell analyzer comprises a sample suction device used for aspirating a blood sample to be tested of a subject, a sample preparation device used for preparing a test sample containing a part of a blood sample to be tested, a hemolytic agent, and a staining agent for identifying nucleated red blood cells, an optical detection device used for detecting an test sample to obtain optical information, and a processor. The processor obtains from the optical information at least one leukocyte characteristic parameter of at least one target particle population in a test sample, obtains an infection marker parameter for evaluating an infection status of a subject on the basis of the at least one leukocyte characteristic parameter, and outputs the infection marker parameter.

Abstract: Provided are a sample analyzer and a sample analysis method. The sample analyzer includes: a sampling apparatus configured to collect a blood sample; a sample preparation apparatus configured to mix the blood sample with a hemolytic agent and a dye to prepare a test sample liquid; an optical detection apparatus configured to detect side-scattered light signals and fluorescence signals generated by particles in the test sample liquid; and a processor configured to: generate a scatter diagram based on at least the side-scattered light signals and the fluorescence signals, and obtain a predetermined feature region, wherein an intensity of side-scattered light corresponding to a central position of the predetermined feature region is greater than an intensity of side-scattered light corresponding to a central position of a region containing neutrophil granulocyte population; and obtain a blast cell parameter based on the predetermined feature region.