Disclosed is an ex vivo method for detecting plural predefined oral biomarkers within biological material present in a human oral cavity when oral cancerous activity is present in said cavity, the method comprising the steps of: i) providing a solid support for accepting a sample of biological material from the oral cavity; ii) transferring a sample of the biological material to the solid support, iii) performing one or more ex vivo plural assays to detect the presence of said plural biomarkers on the solid support, in the form of one or more nucleic acid sequences, and/or one or more proteins, and/or one or more enzymes indicative of said oral cancerous activity. A sample swab 10 suitable for use with the above methods is disclosed also.