Patent ID: 7901643

Claim:
A flow channel member comprising: a body having a first surface which contacts a sensing surface for detecting reaction of a sample, and a second surface; a flow recess provided in said body having at least one edge portion which covers said sensing surface, thereby forming a flow channel between the first and the second surface to let a sample fluid of said sample flow on said sensing surface; wherein said flow channel member further comprises a coating layer, formed from a soft elastic material having a small non-specific adsorption, disposed on the inner wall of said flow recess, and wherein the body is made of a more rigid material than said soft elastic material; wherein said coating layer comprises a projecting sealant portion which extends beyond the edge portion of said body, and is resiliently deformed by the contacting pressure between said sensing surface and said body, thereby sealing said flow channel; wherein said body and said coating layer are integrally formed together by two color molding; and wherein said rigid material is a first resin and said soft material is a second resin.