Abstract: A test strip assembly for detecting the presence of a substance in liquid sample comprises a contact detection pad in communication with a reagent-free absorbent strip. The absorbent strip receives the liquid sample and communicates it to the contact detection pad via lateral flow. The absorbent strip and contact detection pad are adhered to a support. A liquid impermeable pad is disposed adjacent to and spaced apart from the contact detection pad to prevent any further travel of the sample. Further add-on assemblies may be coupled to the base test strip assembly. The test strip assembly may be disposed in a housing along with a drug test strip to form a device that performs multiple types of tests. Methods for assaying and manufacturing are also provided.

Abstract: A fluid testing apparatus comprises a vessel for collecting a fluid, a removable cap secured to the top of the vessel, and a movable carrier to transport a portion of the fluid in the vessel to test strips disposed within the cap. The test strips are disposed in cavities of the cap. One end portion of each test strip exits through an exit port on the bottom side of the cap. A rim on the bottom side of the cap surrounds the protruding end portions of the test strips. The movable carrier is movable between a retrieving position to collect the fluid and a testing position where the retrieved fluid is brought into contact with the protruding ends of the test strips. A spring bias mechanism causes the carrier to move toward the closed, testing position by default. In the testing position, the carrier's receptacle forms a seal with the surrounding rim and the bottom side of the cap to prevent the carried portion of the fluid from contacting the remaining, non-tested fluid in the vessel.