Prostate-specific antigen (PSA) is a protein produced by both normal and cancerous cells in the prostate gland. It is primarily measured through a blood test, where normal levels are typically found ...

Add Yahoo as a preferred source to see more of our stories on Google. New research has found 'wide variation' in the use of prostate cancer testing across the UK. (Getty Images) (Korrawin via Getty ...

Prostate-specific antigen (PSA) testing may not accurately pinpoint levels at which transgender women on estrogen therapy may be at risk of developing prostate cancer, according to data from the ...