Sample measurement system and sample measurement method

A sample measurement system using a cartridge for preparing a measurement sample from a sample and a plurality of types of reagents, the system comprising:

• a cartridge holder configured to detachably hold the cartridge containing the measurement sample in a measurement chamber having a transparent member;
• a photodetector provided so as to face one surface of the cartridge held by the cartridge holder and configured to detect, via the transparent member, light emitted from the measurement sample in the measurement chamber;
• a driver configured to move at least one of the cartridge held by the cartridge holder and the photodetector;
• and
• a controller configured to obtain a measurement result of a target component in the measurement sample based on the light detected by the photodetector,
• wherein the controller is configured to:
• control the driver to arrange the photodetector at a plurality of positions relative to the measurement chamber, and control the photodetector to detect the light emitted from the measurement sample in the measurement chamber at the plurality of positions;
• detect a foreign object in the measurement chamber based on a distribution of light amounts obtained by detecting the light at the plurality of positions;
• and
• wherein the plurality of positions include:
• a first position for detecting, by the photodetector,
• light from a first region of the measurement chamber;
• and
• a second position for detecting, by the photodetector, light from a second region of the measurement chamber.