This document summarizes a research study that used Raman spectroscopy to analyze blood, urine, saliva, and tissue samples from patients with oral potentially malignant disorders (OPMD) and oral cancer. The samples were compared to those from normal controls. The goal was to determine if Raman spectroscopy could help with early diagnosis of oral cancer or OPMDs, which would allow for faster treatment and better prognosis. The abstract provided details on the background and objectives but did not include any results.