PSA Number. Men over 40 and men with a family history of Prostate Cancer. "The PSA test is a blood test used primarily to screen for prostate cancer." The PSA Number is also used with the prostate volume [size] to also determine "Prostate Density" which also is used to determine if more testing is needed. "The test measures the amount of prostate-specific antigen (PSA) in your blood. PSA is a protein produced by both cancerous and noncancerous tissue in the prostate, a small gland that sits below the bladder in men." Also ask your Primary Care Physician if they are doing a PSA test. If not request a PSA test and Finger Wave of your prostate on annual basis.If they will not do it get a referral to a Urologist who specializes in Prostate Cancer. Better to be safe than sorry. The PSA test does not diagnosis Prostate Cancer but lets the Urologist know that more specific testing is needed including MRI's and possible Biopsy. Early detection is the name of the game. I know this from personal experience. CDC Data: https://gis.cdc.gov/Cancer/USCS/DataViz.html "In 2017, the latest year for which incidence data are available, in the United States, 207,430 new cases of Prostate Cancer were reported among men, and 30,486 men died of this cancer. For every 100,000 men, 107 new Prostate Cancer cases were reported and 19 men died of this cancer."