Analysis apparatus

An analysis apparatus comprising:

• a support section that supports, at a measurement position, an analysis chip having a reaction region that holds a reagent;
• a photometry unit including a light-emitting element that irradiates the reaction region of the analysis chip with measurement light, and an area sensor that captures an image of a predetermined imaging range including the reaction region irradiated with the measurement light;
• a color plate arranged within the imaging range and having a region irradiated with the measurement light;
• and
• a processor that acquires the image from the photometry unit to perform quantitative analysis of a detection target substance based on a measurement value corresponding to a photometric region brightness value, which is a brightness value of the reaction region extracted from the acquired image, and that extracts a correction brightness value, which is a brightness value of the color plate, from the image in addition to the photometric region brightness value to correct the measurement value based on the correction brightness value and a correlation between a pre-photometric region brightness value, which is a brightness value of a region corresponding to the reaction region and acquired in advance using a reference plate, and a pre-correction brightness value which is a brightness value of the color plate.