Abstract: Dipping test strip assay system, method for the construction of said test strip system, and method for the detection and/or determination of specific nucleic acid sequences by the use of assay hybridization protocols developed on said test strip system. Colloidal gold particles conjugated to oligonucleotides are dried on the strip, and the protein Streptavidin, as well as an oligonucleotide is immobilized at the membrane area of the strip. A specific nucleic acid sequence is detected when a visible signal indicative of the presence or absence of the analyte is developed at the region of the Streptavidin's immobilization, while the completion of the assay is confirmed by the development of a visible signal at the region of the oligonucleotide's immobilization.