Abstract: An assay device is made by combining a polynucleic acid with a molten material capable of solidifying into a solid thermoplastic or thermosetting material and then allowing the molten material to solidify. The thus-formed thermoplastic solid material has at least some molecules of the polynucleic acid exposed on the surface of the thermoplastic solid material in an orientation wherein the polynucleic acid is bindable to a binding partner by specific binding. The invention further relates to a solid phase substrate having a polynucleic acid embedded therein. The invention further relates to the use of a solid phase substrate having a polynucleic acid embedded therein for hybridization assays and immunoassays to detect anti-nucleic acid antibodies.

Abstract: The invention relates to an immunoassays, binding assays, solid phase substrates (12) and other devices with an antigen or antibody or ligand or receptor (11) embedded into a solid phase substrate (12). The antigen or antibody is mixed with a molten thermoplastic and formed into the solid phase substrate (12).