Electrochemical label free immunosensor for the determination of PSA biomarker

Prostate cancer is the most common cancer in men in the world and is the second leading cause of death from men s cancer in the world. Detectable level of prostate specific antigen in (PSA) human serum reveals the intensity of cancer. It is believed that the consideration of the concentration range of cancer biomarkers and cells in the early stage of the cancer and metastases in the development of novel diagnostic technology is prominent [1]. Due to increasing wide response range, high selectivity and sensitivity for determination of PSA tumor marker in different samples, we introduced this proposed immunosensor.