PROBLEM TO BE SOLVED: To calculate highly accurately a systolic blood pressure and a diastolic blood pressure.SOLUTION: In an organism analyzer including a pulse pressure calculation part for calculating a pulse pressure index relative to a pulse pressure of an organism, an average blood pressure calculation part for calculating an average blood pressure index relative to an average blood pressure of the organism, and a blood pressure calculation part for calculating a systolic blood pressure and a diastolic blood pressure corresponding to the pulse pressure index and the average blood pressure index, at least either of the pulse pressure index and the average blood pressure index is calculated corresponding to a blood flow rate index relative to a blood flow rate of the organism calculated from an intensity spectrum relative to a frequency of light reflected and received by the inside of the organism by irradiation of a laser beam.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】収縮期血圧と拡張期血圧とを高精度に算定する。【解決手段】生体の脈圧に関する脈圧指標を算定する脈圧算定部と、前記生体の平均血圧に関する平均血圧指標を算定する平均血圧算定部と、前記脈圧指標と前記平均血圧指標とに応じて、収縮期血圧および拡張期血圧を算定する血圧算定部とを具備し、レーザー光の照射により前記生体の内部で反射して受光された光の周波数に関する強度スペクトルから算定された、前記生体の血流量に関する血流量指標に応じて、前記脈圧指標および前記平均血圧指標の少なくとも一方が算定される生体解析装置。【選択図】図３
