Patent ID: 8248586

Claim:
A blood analysis apparatus comprising: a driving unit comprising: a chip holding portion having an aperture which allows light to pass therethrough and holding a μ-TAS chip for holding a measurement liquid; a rotary body on which the chip holding portion is rotatably mounted; a rotation driving mechanism which rotates the rotary body; and a chip direction switching mechanism which changes a direction of the μ-TAS chip with respect to the rotary body; a measuring unit comprising: a light source which allows the light to enter the aperture; and a light-receiving unit which receives the light from the light source; and a controller which controls the rotation driving mechanism, the light source, and the light-receiving unit, wherein the controller comprises a measurement position setting part which determines a measurement position of the rotary body at which the measurement liquid is to be measured with the light from the light source, wherein, before the measurement liquid is measured, the measurement position setting part controls the rotation driving mechanism to rotate the rotary body in a state that the chip holding portion is fixed relative to the rotary body such that the chip holding portion is not rotated with respect to the rotary body and sets a rotational position of the rotary body where a light value of the light received by the light-receiving unit through the aperture is a threshold value or more, as the measurement position, and wherein the measurement position setting part determines the measurement position after heating the chip holding portion until an ambient temperature thereof reaches a certain temperature.