Disclosed herein is a resin composition which comprises an ethylene-vinyl alcohol copolymer having an ethylene content of 20-70 mol %, a polyamide resin, and a hydrophobic plasticizer which satisfies the condition specified by equation below, with the amounts of components, , and being 55-97 parts by weight, 3-45 parts by weight, and 0. Included are compositions and methods for increasing the sensitivity of a nucleic acid amplification test for determining the presence of at least one target microorganism in a sample. The housing holds the first IO port and the second IO port in alignment with one another and supports the driver on a substrate of the housing.