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Researchers are currently working on a urine scent test to eliminate the need for biopsies for the diagnosis and treatment of prostate cancer. After establishing that dogs could detect proteins associated with prostate cancer in urine, researchers set out to establish which scent molecules the dogs reacted to. Promising prostate cancer sniffing test passes an important milestone. Currently, biopsies are performed on men who are suspected of having prostate cancer and they may be subjected to further biopsies to establish how treatment is working out. According to a report on newatlas.com, a sensor machine will hopefully one day reduce the need for biopsies. The machine can detect the scent molecules present in prostate cancer patients using a process called gas chromatography-mass spectrometry to identify the volatile organic compounds in the urine. Researchers working on another alternative to biopsies for prostate cancer diagnosis.