Thursday, March 12, 2026

25 - PSA & DIAGNOSIS .... IS IT CANCER?

Many of the questions most asked by men on prostate related platforms relate to a PSA (prostate specific antogen) reading they have received. Their concern is often about whether it is a sign of cancer.

A rise in your PSA level is not an indicator of or proof of any condition including cancer. It just indicates some anomaly in your hormone levels - testosterone and androgens. There can be many causes of this so you should not jump to conclusions or self-diagnose whilst you are waiting for further tests to be carried out. It won't help!

Normal PSA levels generally range from 0 to 4 ng/mL, though what is 'normal' varies significantly based on age, prostate size, and other health factors. PSA levels typically increase with age, with many doctors using lower thresholds (e.g., 2.5 ng/mL) for younger men and higher thresholds (e.g., 6.5 ng/mL) for men over 70. 

Whilst I was in the medical system moving towards TURP surgery my highest PSA reading was 8.5. That was high enough for my consultant to decide do some tests but he urged me not to be unnecessarily concerned and never even talked to me about the results!


Many of those posting about their PSA have levels under 10 ng/mL. It is useful to know that PSA can go into the thousands or even tens of thousands. Reading about levels on the internet it seems to be generally agreed that a level greater than 20ng/mL indicates a higher probability of cancer. It's worth knowing however that levels over 10 ng/mL carry a greater than 50% chance of being cancer ... if you can work that out in percentage-terms I take my hat off to you! A level greater than 50 ng/mL is a very strong indicator of cancer. You can however have a low PSA level AND have cancer and that's why you should not trust your reading to prove anything other than that you should get further help and advice. Here's what AI says about that:

'Studies show that approximately 15% of men diagnosed with prostate cancer have PSA levels of 4.0 ng/mL or less. While higher PSA usually indicates a greater risk, low-PSA cases can sometimes involve aggressive, high-grade cancers that do not produce much PSA'. So whilst you/ your doctor should act on a high PSA reading and seek further tests you should not panic. There are numerous possible reasons for your elevated PSA amongst which are - prostatisis, a simple urinary tract infection (UTI) and of course Benigh Prostatic Hyperplasia (BPH)

(BPH) and prostate-Specific Antigen (PSA) levels are closely connected, primarily because an enlarged prostate (BPH) is one of the most common non-cancerous causes of elevated PSA levels in the blood. Here's AI again:

Key Details on PSA and BPH:

  • Typical Elevated Ranges: For BPH (Benign Prostatic Hyperplasia), PSA is often moderately elevated, frequently falling in the 4–10 ng/mL range.
  • Significantly Enlarged Glands: Very large prostates (e.g., 80 cc) can produce a "normal" PSA for that size that is much higher than 4 ng/mL.
  • Higher Potential Readings: Although rare, BPH, especially when combined with inflammation, can drive PSA levels significantly higher, with some case studies showing levels well above 10 or 20 ng/mL due to severe enlargement, before a biopsy rules out cancer.
  • Cancer Risk Indicators: Generally, as PSA levels increase, the risk of prostate cancer rises. PSA levels over 10 ng/mL, however, carry a greater than 50% chance of being cancer.
  • Age Matters: Normal PSA ranges increase with age (e.g., up to 5.5 ng/mL for men 70–80).
If you are presently worried about your PSA test reading I hope this gives you a little bit of peace of mind whilst you wait for further investigation.

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