A sample vial adaptor, the adaptor comprising a sample vial receptacle configured to receive a sample vial comprising a swab removably sealable within an at least partially transparent enclosure, wherein the sample vial adaptor is configured to affix to a spectroscope, and further wherein the sample vial adaptor is configured to position the sample vial such that the transparent portion of the enclosure is positioned between the swab and a laser of the spectroscope, and such that the swab is positioned at the focal distance of the laser.