Abstract: A saliva sample testing device has a base housing upon which is mounted an upper housing. The base housing has a drawer structure in which are formed reaction wells for receiving fluid specimens. The drawer may be slidable or pivotable out of this base housing to provide access to the reaction wells. In a modification the reaction wells are formed in the top surface of the base housing and the upper housing is tiltable upon or detached from the base housing to provide access to the reaction wells.

Abstract: In this testing device, a saliva sample and a buffer solution are delivered from separate chambers into a mixing chamber to mix with a second reagent.

Abstract: A lateral flow immunoassay test device is provided that includes a housing with an elongated slot for holding a test sample collector; an elongated holder member for securing at least one immunoassay test strip therein; a first chamber for storing a first, pre-treatment reagent; and a second chamber for storing a second reagent. Methods of conducting lateral flow immunoassays are also provided. The device and methods of conducting lateral flow immunoassays as provided herein are advantageous in that they allow pre-treatment and pre-incubation of the test sample so that the sample flows onto the test strip more easily and provide for increases in the sensitivity of the assay.

Abstract: A lateral flow immunoassay test device that includes a housing with an elongated slot for holding a test sample collector; an elongated holder member for securing at least one immunoassay test strip therein; a first chamber for storing a first, pre-treatment reagent; and a second chamber for storing a second reagent. The pre-treatment reagent is contained within a rupturable enclosure. A piercing member is located within the housing that is used to rupture the enclosure in order to release the pre-treatment reagent so that the sample and pre-treatment reagent form a mixture. The second reagent may then be introduced to the mixture which is allowed to react with the second reagent for a period of time. The mixture and second reagent combination is then contacted with the immunoassay test strip.

Abstract: An assay device for testing of liquid samples for drugs of abuse has a transparent container for retaining a liquid sample. A backing member is within the container and is curved so that its front surface corresponds to the curvature of the container wall. Immunoassay test strips are on the front face of the backing and are visible through the container wall. Each test strip is enclosed in a transparent pocket which has a bottom opening through which the bottom portion of the test strip protrudes to contact the liquid sample within the container. The liquid then flows upwardly through the test strip to react with reagents within the test strip.

Abstract: A system and method for merging carpet design image patterns in order to create a custom-designed patterned carpet image. A customized carpet image is defined by identifying a plurality of carpet design fields within a carpet and selecting a distinct design pattern from a plurality of selection options for each identified carpet design field in order to define a customized design field pattern. The customized design field pattern comprises the selected design pattern. Merging the customized design field patterns together defines an image of a custom-designed carpet. Further, a strike-off of the image of the custom-designed carpet image can be produced from the system and method.

Abstract: An immunoassay process is provided for the detection of a target antigen in a fluid sample where an admixture of the target antigen and a labeled capture reagent against the target antigen is contacted by a solid polymeric carrier having bound to a portion of its surface a capture reagent against the target antigen and visual determination of a change in color of the bound labeled reaction product on the surface of the solid carrier member serves to readily detect the presence of the target antigen.

Abstract: Disclosed herein is a composition useful for stabilizing diagnostic reagent which functions to react with a specimen to determine the presence or absence of a biological condition comprising about 0.01 to 35 parts by weight protein or peptide and either (A) about 1 to 90 parts by weight of a saccharide polyol selected from the group consisting of corn syrup and dextrose and optionally up to about 25 parts by weight of a pyrrol, or (B) about 1 to 90 parts by weight of a saccharide polyol and about 0.01 to 25 parts by weight of a pyrrol. Also disclosed is a method of stabilizing such diagnostic reagents comprising using the stabilizing composition, and a diagnositc device comprising a non-absorbent base carrying at least one deposition area in which is carried the evaporative residue of such diagnostic reagent and the stabilizing composition.