The prostate specific antigen (PSA) test is a blood test used to see if you might have prostate cancer and to monitor treatment for prostate cancer. The PSA test does not tell you for certain whether you have prostate cancer.
Should I have a prostate specific antigen (PSA) test?
Having the PSA test may sometimes cause you more harm than benefit. It is therefore very important to consider whether having the PSA test is right for you. See also separate leaflets called PSA Testing for Prostate Cancer and Prostate Cancer.
Benefits and risks of having or not having a PSA test.
|Frequently asked questions||Having a PSA test||Not having a PSA test|
|How does having a PSA test affect my chance of being diagnosed with prostate cancer?|
Having the PSA test increases the chance of prostate cancer being diagnosed. Between 6 and 7 men in every 100 who have a PSA test are diagnosed with cancer.
The PSA test finds many cancers that would not cause any health problems if they remained un-diagnosed and untreated. Therefore having the test may cause unnecessary worry as well as unnecessary investigations and treatment.
|Between 4 and 5 men in every 100 who don’t have a PSA test are diagnosed with prostate cancer at some time in the future. Not having a PSA test will mean you do not have any unnecessary worry, investigations or treatment.|
|What is the effect of having a PSA test on prostate cancer being diagnosed earlier?||Prostate cancer is diagnosed on average between 6 and 8 years earlier in men who have a PSA test than those who don’t have the test.||It is not known whether early diagnosis and treatment makes any difference to how long you are likely to live if you do have prostate cancer.|
|What is the effect of having a PSA test on dying from prostate cancer?|
Men who have prostate cancer are less likely to die of prostate cancer if they have a PSA test. Having a PSA test prevents 1 death from prostate cancer for every 1,000 men who have the test.
The risk of dying from prostate cancer over the next ten years is between 4 and 5 in 1,000 for men who have the PSA test.
|The risk of dying from protstate cancer over the next ten years is 5 in 1,000 for men who do not have the PSA test. The risk of dying from prostate cancer is (at best) 1 in 1,000 less if you have the PSA test than if you don’t have the test.|
|What is the effect of having a PSA test on how long you live?||Studies have shown that men who have the PSA test do not on average live longer or shorter lives than men who do not have the PSA test.||Studies have shown that men who do not have the PSA test do not on average live longer or shorter lives than men who have the PSA test.|
|What is the harm of a positive PSA test result?||If you have a positive PSA test result (a high PSA level) you will be referred to a specialist for further investigations and possibly for treatment of prostate cancer.|
Investigations: about 70 men in every 100 with a raised PSA level will have a biopsy of the prostate. A biopsy of the prostate can cause pain, bleeding and urine infections.
Treatment: problems with treatment for prostate cancer include incontinence of urine and difficulty getting an erection. There may also be complications caused by having an operation or radiotherapy for the prostate cancer.
|If you do not have the test you will not then be referred to a specialist for further investigations and possibly for treatment of prostate cancer.|
|What is the risk of a positive result being wrong (called a false positive result)?|
A false positive result is when the test indicates you do have prostate cancer but you do not have prostate cancer.
|About 70 men in every 100 with a raised PSA result do not have prostate cancer.||Not having a PSA test may avoid the unnecessary anxiety of having an abnormal result when you don’t actually have prostate cancer.|
|What is the risk of a negative result being wrong (called a false negative result)?|
A false negative result is when the test indicates you do not have prostate cancer but you do have prostate cancer.
|About 15 in every 100 men who have a normal PSA level do have prostate cancer.||Not having a PSA test may avoid false reassurance when a false negative result wrongly indicates that you do not have prostate cancer.|
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Disclaimer: This article is for information only and should not be used for the diagnosis or treatment of medical conditions. Patient Platform Limited has used all reasonable care in compiling the information but make no warranty as to its accuracy. Consult a doctor or other health care professional for diagnosis and treatment of medical conditions. For details see our conditions.