Successfully collected and PCR-confirmed clinical samples (urine and vaginal swabs) from HPV-positive and healthy individuals across Northeast India. Developed two electrochemical immunosensors targeting HPV16 E7 and HPV18/16L1 proteins with ultra-sensitive detection limits. Demonstrated the use of a gold-graphitic carbon nitride (Au-g-C₃N₄) nanocomposite and gold nanoparticle-enhanced electrodes for high-specificity biosensing. Completed morphological and electrochemical characterization of sensor platforms(SEM,TEM,XRD, CV, SWV, and EIS), ensuring high reproducibility and analytical performance.