Biogenic substance detector and biogenic substance detection method

A biogenic substance detection method comprising:

• a reaction step of supplying a sample solution to a plurality of chambers connected via a passage and having one of a plurality of biogenic substances contained in the sample solution react with one of a plurality of probes fixed in the chambers to detect the biogenic substance, a different probe being fixed in each of the chambers;
• and
• a detection step of detecting the biogenic substance that has reacted with the one probe;
• in the reaction step, the sample solution being made to move back and forth within the chambers and the passage along a chamber-passage alignment direction,
• the detection step comprising the steps of:
• moving a solution including a chemiluminescent enzyme back and forth within the chambers and the passage so that the chemiluminescent enzyme binds with the one of the biogenic substances that has reacted with the one of the probes;
• filling the chambers and the passage with a substrate liquid that reacts the chemiluminescent enzyme to produce a chemiluminescent substance;
• and
• resting the substrate liquid so as to produce the chemiluminescent substance, and
• the passage having a first cross-sectional area taken perpendicularly to the chamber-passage alignment direction that is smaller than a second cross-sectional area of each chamber taken perpendicularly to the chamber-passage alignment direction.