Which of the following tests is specifically for confirming prostate cancer?

The prostate-specific antigen (PSA) test is specifically designed to detect levels of PSA in the blood, which can be elevated in individuals with prostate cancer. It is important for screening and monitoring the disease because an elevated PSA level may indicate the presence of prostate cancer, particularly in men over the age of 50 or those with a family history of the disease.

Unlike other tests listed, the PSA test is not a definitive diagnostic tool on its own; rather, it is part of a broader assessment that may include digital rectal exams and biopsies. The role of the PSA test is critical in early detection, allowing for timely intervention and treatment options for patients who may be diagnosed with prostate cancer.

The other tests mentioned, while relevant to different cancers or conditions, do not specifically target prostate cancer in the way that PSA does. For example, the PAP diagnostic test is used for other types of cancer screening, especially cervical cancer, and AFP tumor markers are associated with liver cancer and germ cell tumors. The ELP serum test is not commonly recognized in the context of prostate cancer screening or diagnosis.