What is a 'prostate-specific antigen' or PSA?

What is a 'prostate-specific antigen' or PSA?

Mark Vogel (Board Certified Urologist) gives expert video advice on: What is a 'digital rectal exam'?; What is a digital rectal exam looking for during a prostate cancer test?; What is a 'prostate-specific antigen' or PSA? and more...

A prostate-specific antigen is a blood test that is used to detect this chemical in the body. We've discovered this particular antigen, or chemical, is associated with the prostate, but it also tends to be higher in the presence of prostate cancer.