This test is still being researched. PCA3 is a protein made by normal prostate cells. Men with prostate cancer make more of this protein than usual. If someone has high levels of this protein, it can be found in their pee.
The PCA3 test cannot diagnose cancer on its own, but it might help doctors decide whether you should have a biopsy. So those who are very unlikely to have prostate cancer could avoid the possible risks and side effects of having a prostate biopsy.
The PCA3 test is not available on the NHS, but it may be available privately. Your doctor or specialist nurse can talk to you about how helpful it might be for you.