A PSA test checks for prostate-specific antigen, a protein made by the prostate. Understanding what the test can show helps you make an informed decision about testing and about any follow-up you may need. A raised PSA result can have several causes; it does not automatically mean prostate cancer. Equally, a low result cannot rule cancer out. [1]
This guide explains the prostate, PSA levels, different test formats and the questions to discuss with a healthcare professional. It also provides context for the VivaTest PSA Prostate Test Kit.
Health information: This page is educational. Your symptoms, medical history and test result need to be considered together by a qualified healthcare professional.
What is the prostate and why does prostate health matter?
The prostate sits below the bladder and around the urethra, the tube that carries urine out of the body. It helps produce the fluid in semen. It is often compared in size to a walnut, although it commonly becomes larger with age.
The main conditions affecting the prostate include benign enlargement, inflammation and cancer. These conditions are different, even though some can cause similar symptoms. Prostate cancer can also behave very differently from one person to another: some cancers grow slowly, while others are more aggressive.
Prostate health information is relevant to anyone who has a prostate, including men, trans women and some non-binary and intersex people. If you are unsure how your medical history affects testing, ask your clinician. [2]
What does a PSA blood test check?
PSA stands for prostate-specific antigen. Healthy prostate cells produce it, so finding some PSA in the blood is normal. Cancer cells can produce PSA too, but the protein is not exclusive to cancer.
A laboratory PSA blood test reports a concentration, usually in ng/mL, meaning nanograms per millilitre. A nanogram is one billionth of a gram. The result helps a clinician decide whether a prostate problem needs further investigation. It is one part of an assessment, rather than a diagnosis by itself. [1]
PSA test kits and laboratory tests: what is the difference?
PSA testing is available in different formats. A laboratory test typically provides a numerical PSA concentration. Some rapid cassette tests instead indicate whether PSA meets a specified test cut-off, using a result window.
These outputs answer different questions. A threshold result does not necessarily tell you your exact PSA level, and a rapid test's cut-off is not automatically the same as the threshold a clinician uses to decide on further investigation. Read the manufacturer's leaflet to understand what your particular test reports.
Support with interpreting results also matters. Prostate Cancer UK recommends discussing PSA testing with a GP, who can explain its limitations and arrange appropriate follow-up. Using a kit does not remove the need for that discussion, particularly if there are symptoms or an abnormal result. [3]
What is a normal PSA level?
There is no single PSA number that gives everyone an all-clear. A clinician considers the result alongside age, symptoms and other relevant information. An unexpected change from an earlier result may also matter.
For example, a result that seems reassuring when compared with a general online range may still need attention in a younger person or someone with concerning symptoms. Conversely, a raised result may be linked to a non-cancerous prostate condition.
This is why searching for a "normal PSA range" is only a starting point. Ask which threshold applies to your situation and what the result means for your next step. [4]
PSA levels by age: NICE referral thresholds
NICE provides the following age-specific thresholds to help clinicians consider a suspected cancer referral in people with possible symptoms of prostate cancer. They are not a universal normal range, a cancer diagnosis or the operating cut-off of a rapid test kit.
| Age | PSA result above which NICE advises considering referral |
|---|---|
| Under 40 | Use clinical judgement |
| 40–49 | More than 2.5 ng/mL |
| 50–59 | More than 3.5 ng/mL |
| 60–69 | More than 4.5 ng/mL |
| 70–79 | More than 6.5 ng/mL |
| 80 and over | Use clinical judgement |
NICE expresses these values in micrograms per litre; the numerical values are the same in ng/mL. Preferences, other health conditions and the wider clinical assessment also influence referral decisions. These numbers should not be used to dismiss persistent symptoms or to interpret a non-numerical cassette result. [5]
What can cause raised PSA levels?
An elevated PSA result can be associated with prostate cancer, benign prostate enlargement or inflammation. Temporary influences, including infection, recent ejaculation, vigorous exercise and a recent prostate biopsy, may also affect the result.
A result cannot identify the cause on its own. Tell your clinician about anything that could have affected the test; they may recommend further investigation. [6]
Benign prostate enlargement
Benign prostate enlargement is common, especially after 50. As the gland grows, it can put pressure on the urethra and cause a weaker stream, difficulty starting to urinate or a feeling that the bladder has not emptied.
This enlargement is not caused by prostate cancer and does not itself increase the risk of prostate cancer. However, similar symptoms can have different causes, so new or worsening urinary problems still need assessment. [7]
Prostatitis
Prostatitis means inflammation of the prostate. Symptoms can include painful urination, pelvic or genital pain, pain with ejaculation and a high temperature. Infection can be involved, although the cause of long-term prostatitis is not always clear.
If you have symptoms, speak to a GP. A PSA result cannot diagnose prostatitis, and testing should not delay help for a painful or acute illness. [8]
Who should discuss PSA testing with a GP?
Age, ethnicity and family history are important prostate cancer risk factors. The condition mainly affects men over 50, with risk increasing as people get older. Black men and men with a family history can be at higher risk from a younger age.
Prostate Cancer UK advises discussing risk with a GP from around 50, or from around 45 if you are Black or have a family history of prostate cancer. Having a father or brother who has had prostate cancer is particularly relevant. Some inherited gene variants, including BRCA variants, also affect risk.
These are prompts for a conversation, rather than instructions for everyone to follow the same testing schedule. Symptoms should be assessed at any age. Tell your clinician about relevant family cancers and any known genetic results. [9]
Which prostate symptoms should be checked?
Book a GP appointment if you notice changes such as:
- Difficulty starting to urinate or needing to strain.
- A weak or interrupted urine stream.
- Needing to urinate more often, urgently or during the night.
- Feeling that your bladder is not fully empty.
- Blood in urine or semen, or new problems with erections.
These symptoms do not necessarily mean cancer. Nevertheless, changes that persist, worsen or feel unusual should be checked. Unexplained weight loss or persistent lower back pain also warrants medical advice.
Early prostate cancer often has no symptoms. Being able to urinate normally therefore does not establish that there is no prostate problem. Likewise, a test result should not be used to explain away an ongoing symptom. [10]
When to seek urgent help: If you cannot urinate at all, have blood in your urine or have pain when urinating, ask for an urgent GP appointment or contact NHS 111. Do not wait for a test kit or another PSA result. [7]
What should you consider before a PSA test?
Preparation helps reduce avoidable influences on the result. NHS guidance advises avoiding ejaculation, cycling and vigorous exercise for 48 hours before a PSA blood test. You can usually eat and drink normally.
If you have had a urine infection, discuss timing with your clinician. NHS guidance advises waiting four to six weeks after the infection has cleared before PSA testing. Follow the advice given for your circumstances. [11]
Also mention recent prostate or bladder procedures and any catheter use. Tell the clinician about all medicines you take. Finasteride and dutasteride can lower PSA, which changes how the result is interpreted. Do not stop prescribed medicines to prepare for a test without medical advice. [1]
For any test kit, follow its own sample collection and reading instructions. General PSA preparation advice does not replace the leaflet supplied with the device.
How does the VivaTest PSA Prostate Test Kit fit in?
The VivaTest PSA Prostate Test Kit uses a finger-prick blood sample and a cassette-style result window. The product listing describes a single-test kit with sample collection components and instructions; a urine sample is not required.
Use the supplied instructions for the sample amount, test procedure, reading time, result interpretation and permitted use. Check the leaflet for the kit's specific detection cut-off. A general PSA chart should not be substituted for those instructions.
An abnormal result should be discussed with a GP or another qualified healthcare professional. If you have symptoms or ongoing concerns, seek advice even if the result appears reassuring. [12]
What happens after a raised or abnormal PSA result?
Tell your GP what test you used, when it was taken and what it showed. Bring any numerical report or the kit's instructions, and explain any symptoms, recent infections and medicines.
Depending on the assessment, a clinician may arrange a laboratory PSA test, repeat testing or a specialist referral. The next step depends on the individual circumstances. [11]
If you are referred for investigation of possible prostate cancer, an MRI scan can provide more information about the prostate. A specialist may then recommend a biopsy, which takes small tissue samples for examination. An abnormal PSA result or a referral does not itself confirm cancer. The specialist will explain what the findings mean and what happens next. [13]
What are the benefits and limitations of PSA testing?
PSA testing can help identify prostate cancer before symptoms appear, when treatment may be more effective. However, the potential benefit needs to be considered alongside its limitations.
- False alarms: PSA can be raised without cancer, potentially causing anxiety and further investigations.
- Missed cancers: Some people have prostate cancer despite a PSA result that is not raised.
- Overdiagnosis: Testing can identify a cancer that would never have caused harm during that person's lifetime.
- Unnecessary treatment: Treating a cancer that would not have caused problems can expose someone to side effects.
The aim is an informed decision that takes account of your risk, health and preferences. A clinician can help you understand what an unexpected result might lead to before you decide to test. [6]
How often should PSA be checked?
There is no single testing interval suitable for everyone. Your age, personal risk, symptoms and previous results all affect the discussion. Ask your clinician whether another test is appropriate and when it should be done, rather than choosing a schedule solely from the availability of kits. [14]
People who have been diagnosed with prostate cancer or treated for it follow a different monitoring pathway. Their specialist team interprets PSA in the context of the treatment received. A general rapid test should not replace the laboratory monitoring arranged by that team. [15]
Is there a national prostate cancer screening programme?
Screening people without symptoms is different from investigating symptoms or an individual abnormal result. Following its March 2026 review, the UK National Screening Committee did not recommend population-wide prostate cancer screening.
It recommended targeted PSA screening every two years for men aged 45–61 who have a pathogenic BRCA2 variant and a family history of breast, ovarian, pancreatic or prostate cancer. A recommendation is not the same as universal access to a programme: ask your GP or genetics team about the pathway available to you. This specific recommendation should not be read as a schedule for all men. [16]
Questions to take to your GP
You do not need to arrive with a diagnosis. A useful conversation can start with your symptoms, concerns and what you hope a test will help you understand. You could ask:
- How do my age and family history affect my risk?
- What are the benefits and limitations of testing for me?
- Could my medicines or a recent infection affect the result?
- Would a laboratory PSA test be appropriate?
- Would an examination or another investigation help?
- How will I receive the result, and who will explain it?
- If the result is raised, what would happen next?
You can ask about an NHS PSA test. Your clinician should help you consider suitability and explain the result in context. [17]
Frequently asked questions about PSA tests
Is a PSA test a prostate cancer test?
PSA is used in assessing possible prostate cancer, but it cannot confirm or exclude cancer by itself. Other information and sometimes further tests are needed. [4]
Can PSA be high without cancer?
Yes. Benign enlargement, inflammation and temporary influences can raise PSA. A clinician needs to assess the possible cause rather than treating the result as a diagnosis. [4]
Does a negative rapid PSA test give me an exact PSA number?
Not necessarily. Some rapid tests report a threshold result rather than a numerical concentration. Check the supplied leaflet; do not convert a result line into a laboratory PSA value. [3]
Do I need symptoms before asking about PSA testing?
No. You can discuss your risk and the option of testing even without symptoms. The decision should take account of the possible benefits and drawbacks. [14]
Do I always need a rectal examination before a PSA blood test?
No. A digital rectal examination may be offered when symptoms need assessment, but you can discuss having a PSA blood test on its own. An examination is a separate part of the assessment. [14]
Should I keep repeating a test after an abnormal result?
Contact a healthcare professional about the first abnormal result. They can decide whether repeat testing or referral is appropriate. Repeated testing should not postpone assessment. [11]
How long does a PSA test take?
The time depends on the test format. For the VivaTest kit, follow the reading time in the supplied leaflet. Read the result within the specified window. [12]
Sources and further reading
Information sources checked on 8 October 2026. This guide does not replace the instructions supplied with a test or an individual medical assessment.
- Prostate Cancer UK: The PSA blood test.
- Prostate Cancer UK: About prostate cancer and the prostate.
- Prostate Cancer UK: The pros and cons of PSA self-test kits.
- Prostate Cancer UK: Understanding the diagnostic pathway.
- NICE NG12: Prostate cancer referral guidance, recommendation 1.6.3 and table 2.
- US National Cancer Institute: Prostate-Specific Antigen Test. Used for general test limitations, not UK referral policy.
- NHS: Enlarged prostate.
- NHS: Prostatitis.
- Prostate Cancer UK: Prostate cancer risk factors.
- NHS: Symptoms of prostate cancer.
- NHS: PSA test.
- VivaTest: PSA Prostate Test Kit product information. Used for product format and contents, not independent clinical evidence.
- NHS: Tests and next steps for prostate cancer.
- Prostate Cancer UK: Questions about the PSA blood test, February 2026.
- Prostate Cancer UK: Follow-up after prostate cancer treatment.
- UK National Screening Committee: Current prostate cancer recommendation.
- Prostate Cancer UK: Understanding the PSA blood test, June 2025.
