PSA Levels by Age: What a Raised PSA Means

November is Movember, the month when men are encouraged to think about their health, from mental wellbeing to prostate and testicular cancer. For many men over 50, that conversation turns to the PSA test. PSA, or prostate specific antigen, is a protein made by the prostate gland, and a small amount in the blood is normal.

PSA naturally rises with age, and it can go up for many reasons other than cancer. This guide explains PSA levels by age, what can raise your result, who can ask for a test, why PSA is not used for routine screening in the UK and what happens after a raised result.

Test it in Chiswick: our PSA (Total) blood test costs £59, with your result explained in person by a practitioner. No GP referral needed. Book this test or call 020 4515 0000. Prefer to test at home? A home finger-prick kit is also available, ask us when you enquire.

Quick answer

There is no single normal PSA. Prostate Cancer UK says that for many men it is usually under 3 ng/mL, but it rises with age. For men with possible prostate symptoms, NICE uses these age thresholds for referral: above 2.5 ng/mL at 40 to 49, above 3.5 at 50 to 59, above 4.5 at 60 to 69 and above 6.5 at 70 to 79. A raised PSA does not mean cancer, and a normal PSA does not rule it out. The usual next step is a repeat test and, if it stays high, an MRI scan.

PSA levels by age

NICE guideline NG12 sets these age-specific PSA thresholds for people with possible symptoms of prostate cancer. PSA is measured in ng/mL, which is the same as micrograms per litre.

• Under 40: no fixed threshold, clinical judgement is used.
• 40 to 49: more than 2.5 ng/mL.
• 50 to 59: more than 3.5 ng/mL.
• 60 to 69: more than 4.5 ng/mL.
• 70 to 79: more than 6.5 ng/mL.
• Over 79: no fixed threshold, clinical judgement is used.

For men without symptoms, earlier NHS guidance for GPs, the Prostate Cancer Risk Management Programme, used 3.0 ng/mL as the referral point for men aged 50 to 69. That programme has since been withdrawn, and GPs now weigh your PSA against your age, symptoms, family history and other risk factors. Laboratory ranges also vary, so read the range on your report.

What your result means

• Below the threshold for your age: reassuring, although around 1 in 7 men with a normal PSA may still have prostate cancer, according to one major study cited by Prostate Cancer UK.
• Above the threshold for your age: worth discussing with your GP. Many men with a raised PSA do not have cancer, and the test is usually repeated after ruling out things that push PSA up.
• Rising over time: a steady rise across several tests can matter more than a single number, so keep your results together.

What can raise PSA

• An enlarged prostate, which is very common with age.
• A urine or prostate infection. The NHS advises waiting 4 to 6 weeks after an infection has cleared before testing.
• Ejaculation, vigorous exercise and cycling in the 48 hours before the test.
• Anal sex or prostate stimulation. The NHS says avoid it for 48 hours, and Prostate Cancer UK suggests a week.
• A urinary catheter, a prostate biopsy or other bladder or prostate procedures. Prostate Cancer UK suggests waiting up to 6 weeks.

Some medicines for an enlarged prostate, such as finasteride and dutasteride, lower PSA, so tell your practitioner if you take them.

Is PSA a screening test in the UK?

No. The NHS does not offer routine PSA testing to men without symptoms, because the test can give false alarms that lead to biopsies and treatment that were not needed, and it can also miss some cancers. In 2026 the UK National Screening Committee recommended a targeted screening programme only for men aged 45 to 61 with a BRCA2 gene variant and a family history of cancer, and the government accepted this. Screening is not recommended for the general population.

Who can ask for a PSA test

Anyone with a prostate can talk to their GP about a PSA test, and the GP will explain the pros and cons. Prostate Cancer UK advises:

• Men over 50 who are worried about their risk to speak to their GP.
• Black men to start that conversation from 45. About 1 in 4 Black men will get prostate cancer in their lifetime, compared with about 1 in 8 men overall.
• Men with a father or brother who had prostate cancer to start from 45, as their risk is about two and a half times higher.
• Men with a known BRCA2 gene variant to ask about regular testing, as the NHS already offers them routine PSA testing.

What happens after a raised PSA

Your GP will usually repeat the test, check for infection and may examine your prostate. They will consider your age, symptoms, family history and other health problems. If PSA stays raised, you may be referred to a hospital specialist. Most men now have an MRI scan of the prostate first, and only have a biopsy if the scan shows something that needs a closer look.

Symptoms and when to get help

Early prostate cancer often causes no symptoms. Prostate problems can cause difficulty starting to pee, straining, a weak flow, needing to pee more often or at night, and erectile problems.

• Ask for an urgent GP appointment or contact NHS 111 straight away if you cannot pee at all.
• Ask for an urgent GP appointment or contact NHS 111 if you see blood in your pee, or have pain when peeing.
• See your GP promptly about blood in your semen, new bone or lower back pain, or unexplained weight loss.

Preparing for the test and retesting

You can eat and drink as normal. For 48 hours beforehand, avoid ejaculation, vigorous exercise and cycling. Wait 4 to 6 weeks after a urine infection has cleared, and tell us about recent procedures and any prostate medicines. How often to retest depends on your age, risk and previous results, so agree a plan with your GP or practitioner, and use the same laboratory if you can so results are easier to compare.

Frequently asked questions

Is a PSA of 4 high?

It depends on your age. Under the NICE thresholds for men with symptoms, 4 is above the limit for ages 40 to 59 but within it for ages 60 to 79. Discuss it with your GP, who will look at your symptoms and risk.

Can cycling raise PSA?

Yes, it can raise PSA for a short time. Avoid cycling and other vigorous exercise for 48 hours before your test.

Does a high PSA mean I have prostate cancer?

No. Many men with a raised PSA do not have cancer. An enlarged prostate and infection are common causes.

Can I have a PSA test without symptoms?

Yes. You can ask your GP, or test privately. It is worth understanding the pros and cons first, as a raised result can lead to further tests.

What is free PSA?

Free PSA is the part of PSA that is not attached to proteins in the blood. Specialists sometimes look at it alongside total PSA. Our Free PSA test costs £69.

PSA testing in Chiswick

We take your sample at our clinic at 8 to 9 Bedford Corner, The Avenue, Chiswick, London W4 1LZ. We are a short walk from Turnham Green station (District line, with Piccadilly line trains stopping there early morning and late evening only) and close to the 94, E3 and 272 bus routes. Limited parking is available on request when you book. Your sample is analysed at the Randox accredited laboratory, no GP referral is needed, and most results are ready within a few working days. A practitioner explains your result with you in person, and a GP feedback report is available on request.

Book the PSA (Total) blood test, or choose the Prostate Profile (£89), which adds newer prostate risk markers. You can also explore our men's health blood tests, compare every blood test and price, or read about testosterone levels in men.

This article is general information, not medical advice. Discuss your results with your GP or practitioner.