The Importance of Prostate Cancer Testing: Know Your Number
Prostate Cancer Testing 101 PSA Test

PSA is a protein that is produced by cells in the prostate. If the amount of PSA is higher than normal, this is a possible indicator of prostate cancer, because a tumor in the prostate could cause higher amounts of PSA to be produced, which would then be detectable by a blood test.13

However, it is very important to realize that many other factors can also cause a rise in PSA level. See the interpretation section of this program for information about what the findings of the PSA test mean.