Nanoparticle Measurement Device, Analysis Device, and Analysis Method

A nanoparticle measurement device comprising:

• a timing signal generation unit configured to generate a first timing signal corresponding to a first track interval in a reaction region formed in a disc for specimen analysis having a plurality of tracks on which nanoparticles binding to substances to be detected are captured per track, and a second timing signal corresponding to a second track interval different from the reaction region, the tracks being formed from an inner side to an outer side of the disc for specimen analysis;
• a low-frequency component extraction unit configured to extract a low-frequency component fluctuating because of a warp of the disc for specimen analysis from a light reception signal according to the second timing signal, the light reception signal being generated when a laser light is radiated to the reaction region and a reflected light is received from the reaction region;
• a low-frequency component calculation unit configured to calculate an interpolated low-frequency component corresponding to the first track interval and interpolated in accordance with the low-frequency component;
• a threshold correction unit configured to correct a predetermined threshold in accordance with the interpolated low-frequency component to set a corrected threshold;
• and
• a measurement unit configured to extract nanoparticle pulse signals from the light reception signal according to the first timing signal and the corrected threshold, and count the nanoparticle pulse signals, so as to count the nanoparticles captured in the first track interval in the reaction region.