Patent ID: 7842509

Claim:
A blood analyzer comprising: a light emitter for emitting light to an analysis sample which is a mixture of a blood specimen and a reagent; a light receiver for receiving light of a plurality of wavelengths from the analysis sample over time, and for outputting data of an amount of the received light received at a plurality of points of time for each of the plurality of wavelengths; a memory encoded with the data output by the light receiver, the stored data comprising a plurality of data each corresponding to one of the plurality of wavelengths and each comprising data of the amount of the received light received by the light receiver at the plurality of points of time; a selector programmed to select data corresponding to one of the plurality of wavelengths from the data stored in the memory, the selecting being based on a change over time of an amount of light received, said change over time represented in the data stored in the memory; and an analyzer programmed to analyze a characteristic related to blood coagulation of the blood specimen using the data which are selected by the selector.