A flow cell includes a first layer, a second layer, and a third layer. The first layer includes a first flow path and a first electrode. The second layer includes a second flow path and a second electrode. The third layer is formed between the first layer and the second layer, and includes a first connection hole connecting the first flow path and the second flow path. The first electrode is disposed in the first flow path at a first side opposite to a second side where a sample is provided to the first flow path with respect to the first connection hole. The second electrode is disposed in the second flow path at a third side opposite to a fourth side where a fluid is discharged from the second flow path with respect to the first connection hole.