What is the primary use of the PSA Diagnostic test?

The primary use of the PSA (Prostate-Specific Antigen) diagnostic test is to confirm prostate cancer. PSA is a protein produced by both normal and malignant cells of the prostate gland. Elevated levels of PSA in the blood can indicate the presence of prostate cancer, leading doctors to perform further diagnostic tests, including biopsies, to confirm the diagnosis.

While PSA testing can also be useful in monitoring the effectiveness of prostate cancer treatment or checking for recurrence, its main function is to help identify whether prostate cancer might be present in individuals, particularly those who are at higher risk due to age or family history. Other options, such as screening for cervical cancer or monitoring breast cancer, do not relate to the PSA test specifically, as those conditions require different markers and screening methods. Similarly, the identification of liver tumors is not associated with PSA levels.