Patent Document ID: 9863872
Application ID: 15080129
Patent Status: 1

Claim One:
1. A sample analyzer comprising: a preparation unit configured to mix a sample and a reagent to prepare a measurement specimen; a measurement unit comprising a light source, the measurement specimen irradiated with light from the light source to acquire time series data of an optical measurement signal over a time period during which the measurement specimen is measured; a controller comprising a processor configured with a program to perform operations comprising: dividing the time series data acquired by the measurement unit into data segments comprising a plurality of data points, determining first regression lines respectively of the data segments, calculating a matching degree between each of the first regression lines and the time series data, selecting one of the first regression lines having a highest value of the matching degree with the time series data, setting as an analysis target region, a region of the time series data among the time series data acquired by the measurement unit in the time period during which the measurement specimen is measured, in which ones of the time series data matches the selected first regression line, determining a second regression line using the time series data included in the set analysis target region, and analyzing the set analysis target region using the second regression line for an analysis target reaction in the measurement specimen.