Patent ID: 8823941

Claim:
A detection device comprising: a flow channel; a suction section adapted to draw a fluid sample in the flow channel; an optical device disposed in the flow channel; a light source adapted to irradiate the optical device with light; a light detection section adapted to detect light emitted from the optical device; a microbalance sensor chip disposed in the flow channel, the microbalance sensor chip having a piezoelectric substrate provided with an oscillation electrode; and a quantitative analysis section adapted to perform quantitative analysis on the fluid sample based on output from the light detection section and the microbalance sensor chip, wherein the optical device has a metal nanostructure including a projection in a size range of 1 through 1000 nm; the optical device emits light representing the fluid sample adsorbed to the metal nanostructure; the quantitative analysis section is configured, if a variation in output intensity of the light detection section and a variation in output of the microbalance sensor chip both either increase or decrease, to perform the quantitative analysis based on the output intensity of the light detection section; and the quantitative analysis section is configured, if the variation in the output intensity of the light detection section and the variation in the output of the microbalance sensor chip oppositely increase or decrease, or if there is no variation in the output of the microbalance sensor chip, to refrain from performing the quantitative analysis and repeat detecting light emitted from the optical device with the light detection section.