If the PSA blood test comes back with a PSA less than 2.5 ng/mL, the patient does not have cancer and does not need to be screened for another 2 years. However, if the test is above 2.5 ng/mL, the patient should be screened annually.
Only 15% of those with a PSA level between 2.5 ng/mL and 4.0 ng/mL will develop prostate cancer. However, patients’ whose levels are between 4.0 ng/mL and 10 ng/mL have a 25% increased risk of developing the disease. A PSA level above 10 ng/mL increases your risk for prostate cancer to 1 in 2, and your doctor will typically recommend a biopsy.