PSA (prostate-specific antigen) is a protein made by the prostate gland.
- Normal range (adults)
- Up to 4 ng/mL (up to 4 µg/L)
- Sample
- Blood
- Fasting
- Not usually needed
- Also called
- Total PSA, tPSA, PSA total
PSA normal range
| Group | ng/mLConventional units: US, South Asia | µg/LSI units: UK, Europe, Australia, international |
|---|---|---|
| Men | Up to 4 | Up to 4 |
PSA naturally rises with age and prostate size. Many labs use age-specific cut-offs.
Your report may use either unit system; labs in the Gulf often print both. Ranges also vary slightly between laboratories, so the range printed on your own report is the one to go by.
Why is the PSA test done?
It is used to screen for prostate cancer after discussion with a doctor, and to monitor prostate conditions in men.
What does a high PSA level mean?
A raised PSA does not mean cancer; most raised levels are due to an enlarged prostate or inflammation. Levels rise naturally with age.
Common causes
- Benign prostate enlargement (BPH)
- Prostate infection or inflammation
- Recent ejaculation, cycling or a prostate examination
- Urinary catheter or infection
- Prostate cancer
Diet and lifestyle tips
- Avoid ejaculation and cycling for 48 hours before a repeat test
- A diet rich in vegetables, tomatoes and fish, with less red and processed meat, supports prostate health
When should you see a doctor?
A raised PSA should be repeated and discussed with your doctor, who may recommend an MRI or urology referral.
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This page is for general education and is not a diagnosis. Normal ranges differ between laboratories, so always compare your result with the reference range printed on your own report, and discuss abnormal results with your doctor.