A PSA test is a blood test for prostate-specific antigen, a protein made by both normal and cancerous prostate cells. None of the three countries tells every man to test without a discussion first. In the US it is an individual decision from 55 to 69, the NHS tests on request after a GP conversation, and Australia's 2026 guidelines suggest two-yearly testing from 50.
The differences come down to age, family history and the PSA level that triggers a repeat test. This guide sets out each country's position, PSA levels by age and what raises PSA besides cancer.
What is a PSA test?
A PSA test measures how much prostate-specific antigen is in a blood sample. The US National Cancer Institute explains that both prostate cancer and benign conditions, particularly benign prostatic hyperplasia (an enlarged prostate) and prostatitis (inflammation of the prostate), can raise the level.
US reports give PSA in ng/mL, while Australian guidelines and NICE use micrograms per liter (µg/L). The units are numerically identical: 3.0 µg/L is 3.0 ng/mL.
PSA testing guidelines compared: US, UK and Australia
PSA testing guidance differs mainly in who is offered testing and when.
| Country | Current guidance | Who is offered testing | Interval or action level |
|---|---|---|---|
| US | USPSTF, 2018 (update in progress) | Men 55 to 69 decide individually; testing not recommended from 70 | Periodic testing by individual decision |
| UK | NHS, plus UK NSC recommendation of March 2026 | Anyone with a prostate can ask a GP; routine testing only for known BRCA2 carriers | Targeted program for BRCA2 carriers with family history: every 2 years from 45 to 61 |
| Australia | 2026 NHMRC-approved guidelines | Men 50 to 69 after discussion; higher-risk men from 45; 70 and over after clinical assessment | Every 2 years; repeat within 1 to 3 months if PSA is 3.0 µg/L or more at 50 to 69 |
United States. The US Preventive Services Task Force (USPSTF) recommendation, released on May 8, 2018, says the decision for men aged 55 to 69 should be an individual one after discussing benefits and harms with a clinician (grade C). It recommends against PSA-based screening in men 70 and older (grade D). An update is in progress, but only a research plan had been posted by October 2026. The NCI notes that Medicare covers an annual PSA test for all Medicare-eligible individuals over 50.
United Kingdom. The NHS PSA test page says routine PSA testing is not currently offered unless genetic tests have shown a faulty BRCA2 gene, but anyone with a prostate can ask a GP, who will discuss benefits and risks first. In March 2026 the UK National Screening Committee declined to recommend population screening. It recommended targeted PSA testing every 2 years for men aged 45 to 61 with a pathogenic BRCA2 variant and a family history of breast, ovarian, pancreatic or prostate cancer. The UK Government accepted this for England on June 2, 2026, with rollout expected in 2027.
Australia. The 2026 Guidelines for the Early Detection of Prostate Cancer in Australia, approved by the NHMRC on May 18, 2026, define higher risk as at least double the average risk: a brother with prostate cancer, a father diagnosed before 65, two or more second-degree relatives who died of it, Black men of sub-Saharan African ancestry, or a BRCA2 mutation.
At what age should men get a PSA test?
The age to consider a PSA test depends on your country and your risk. In the US it is an individual decision from 55 to 69. The NHS page sets no starting age; targeted screening for eligible BRCA2 carriers will run from 45 to 61. In Australia the discussion starts at 50, or 45 for higher-risk men, and men aged 45 to 49 who are not at higher risk may have a single initial test if interested.
Australian men aged 70 and over may continue two-yearly testing after a clinical assessment, but only where life expectancy is greater than seven years. Those with a PSA below 5.5 µg/L may stop.
What is a normal PSA level? PSA levels by age
There is no single normal PSA level. The NCI states that no threshold separates normal from abnormal, though above 4.0 ng/mL is generally considered abnormal, and some doctors use higher cut-offs for older men and lower ones for younger men.
Age-specific thresholds differ by purpose. NICE guideline NG12 sets referral thresholds for people with possible symptoms. Australian action levels apply to men without symptoms and prompt a repeat test within 1 to 3 months, then referral if confirmed.
| Age | NICE threshold with possible symptoms (UK) | Australian action level without symptoms |
|---|---|---|
| 40 to 49 | More than 2.5 | 1.0 or more (from 45) |
| 50 to 59 | More than 3.5 | 3.0 or more (2.0 if higher risk) |
| 60 to 69 | More than 4.5 | 3.0 or more (2.0 if higher risk) |
| 70 to 79 | More than 6.5 | 5.5 or more |
Values are in µg/L (ng/mL). NICE leaves under-40s and over-79s to clinical judgment. A result below these levels does not rule cancer out: the Australian guidelines note that some men have clinically significant cancer despite a low PSA.
What can raise PSA besides cancer?
Several things other than cancer can raise PSA:
- Enlarged prostate and prostatitis, both listed by the NCI and USPSTF.
- Infection or inflammation. The NCI says these, or a recent prostate biopsy, can keep PSA raised for a month or two. The NHS advises waiting 4 to 6 weeks after a urine infection has cleared.
- Ejaculation, anal sex, vigorous exercise and cycling. The NHS advises avoiding all four for 48 hours before a test.
- Acute urinary retention, meaning sudden inability to pass urine, listed in the Australian guidelines. This is urgent in its own right, not something to raise at a PSA appointment: the NIDDK advises seeking emergency treatment right away if you suddenly cannot urinate. Go to an emergency department, or call 911, 999 or 000 if you need an ambulance.
Some factors push PSA down instead. The Australian guidelines note that 5-alpha reductase inhibitors such as finasteride and dutasteride can lower PSA by up to 50%, and that obesity and low testosterone are associated with lower PSA.
PSA also varies on its own. The Australian guidelines report that one-third of men with a PSA below 10 µg/L had a difference of more than 1.0 µg/L at a second measurement, which is why a raised result is repeated before referral.
Should I get a PSA test? Benefits and harms
Whether to test is a decision about trade-offs. The USPSTF describes a small potential benefit of reducing the chance of death from prostate cancer in some men. Against that, many men experience harms: false-positive results leading to more tests and possible biopsy, overdiagnosis and overtreatment, and treatment complications such as incontinence and erectile dysfunction.
In Australia's pathway, a raised PSA leads to a repeat test, then an MRI scan before any biopsy decision. The guidelines estimate that this MRI step avoids around half of unnecessary biopsies, and they recommend active surveillance (structured monitoring rather than immediate treatment) for low-risk cancer.
Practical checks before a PSA test
1. Clear the 48-hour window.
Follow the NHS 48-hour advice above and delay testing after a urine infection. You can eat and drink as usual; see fasting before a blood test for tests that do need it.
2. Bring your family history from both sides.
Note any relatives with prostate, breast, ovarian or pancreatic cancer, their ages at diagnosis and any known BRCA2 result. It changes eligibility in the UK and Australia.
3. List medicines that lower PSA.
Tell the requesting clinician if you take finasteride or dutasteride.
4. Keep every result with its date and unit.
A single number matters less than whether a raised value is confirmed on repeat.
When to see a doctor, and what to ask
Symptoms move PSA testing from screening into diagnosis. The NHS says testing may be recommended if you are peeing more than usual, have a sudden urge to pee, get up often in the night to pee, see blood in your pee or have problems getting or keeping an erection. Our guide to waking up at 3 a.m. covers other causes of night-time waking.
In the US, start with your primary care physician; in the UK or Australia, your GP. A PSA test is a separate decision from the panel in annual blood work for men. Ask:
- Am I at higher risk because of family history, ancestry or a known gene variant?
- What PSA level would lead to a repeat test, and what happens after that?
- Would an MRI come before any biopsy?
Frequently asked questions
At what age should men get a PSA test?
It depends on country and risk. The USPSTF calls testing an individual decision from 55 to 69. Australia's 2026 guidelines suggest a discussion from 50 and two-yearly testing for men who choose it, or from 45 for higher-risk men. On the NHS, any man can ask his GP.
What is a normal PSA level?
There is no single normal PSA level. The US National Cancer Institute says above 4.0 ng/mL is generally considered abnormal, but cut-offs vary with age. Australia's 2026 action levels are 3.0 µg/L at 50 to 69 and 5.5 µg/L from 70, lower for higher-risk men. A lower result does not rule out cancer.
What can raise PSA besides cancer?
An enlarged prostate, prostatitis, urine infection, a recent prostate biopsy and acute urinary retention can all raise PSA. Ejaculation, anal sex, vigorous exercise and cycling can raise it briefly, so the NHS advises avoiding them for 48 hours before a test. Medicines such as finasteride and dutasteride lower PSA instead.
Can I get a PSA test on the NHS?
You can ask for one. The NHS says routine PSA testing is not offered unless genetic tests show a faulty BRCA2 gene, but anyone with a prostate can ask a GP, who will discuss benefits and risks first. Targeted screening for BRCA2 carriers with a relevant family history is expected to start in England in 2027.
Should I get a PSA test after 70?
Guidance differs. The USPSTF recommends against PSA-based screening for men aged 70 and older. Australia's 2026 guidelines allow two-yearly testing after 70 following a clinical assessment, only where life expectancy is greater than seven years. Men over 70 with a PSA below 5.5 µg/L may stop.
The short version
A PSA test measures a prostate protein that rises with cancer but also with an enlarged prostate, infection, ejaculation and exercise. The US treats testing as an individual decision from 55 to 69, the NHS tests on request and will screen eligible BRCA2 carriers, and Australia suggests two-yearly testing from 50, or 45 for higher-risk men. No single PSA level is normal. In screening without symptoms a raised result is usually repeated, but symptoms or an abnormal examination may need prompt assessment instead.
This article is general education, not medical advice. It does not replace your own physician.
