PROBLEM TO BE SOLVED: To provide a conductive composition appropriately used for a device for biological sensing excellent in expansion and contraction properties after molding and in conductivity after expansion and contraction.SOLUTION: A conductive composition contains (A) an electroconductive polymer and (B) an organic compound having at least five functional groups capable of forming a hydrogen bond in a molecule in which the melting point is 130°C or below, and, if a melting point does not exist, a glass transformation temperature is 130°C or below, and is used for a device for biological sensing.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】成型後の伸縮性及び伸縮後の導電性に優れ、生体センシング用デバイスの用途に好適に用いられる導電性組成物を提供すること。【解決手段】(A)導電性高分子、及び、(B)分子中に水素結合を形成可能な官能基を少なくとも5つ有し、融点が130℃以下であって、融点が存在しない場合はガラス転移温度が130℃以下である有機化合物を含有する導電性組成物であって、生体センシング用デバイスに用いられることを特徴とする導電性組成物。【選択図】なし