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Oncology Markers%

Free / Total PSA Ratio

This ratio compares unbound free PSA to total PSA, helping characterize the benign nature of prostate fluctuations.

Common laboratory aliases and abbreviations:Ratio PSARapport PSA libre/totalPSA libre/totalFree-to-total PSAFree PSA percentageCociente PSA libre/total

Test your personal value

Enter the number from your lab report to instantly see how it compares to reference ranges.

%
57.5%
15
100
‹ LowRange: 15 – 100 %High ›

Physiological Reference Ranges

The ranges below represent standard adult physiological values. Your laboratory's printed reference range always takes precedence.

Adults (general)

15 – 100 %

Adult females

0 – 0 %

Adult males

15 – 100 %

Common alternative units:
ratio(×100 %)

What does a low result mean?

A slightly lower percentage simply suggests gentle clinical review (such as a routine physical exam or ultrasound).

What does a high result mean?

A ratio above 20-25% is very reassuring, strongly suggesting ordinary benign prostatic enlargement (BPH).

Questions ready for your doctor

Bring these questions to your next consultation to discuss with your healthcare practitioner:

  • Does this ratio point toward ordinary, benign prostate tissue enlargement?
  • Would a routine pelvic ultrasound offer good visual confirmation?
  • How frequently should this parameter be monitored going forward?

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Important information — Medical notice

ScanMyLab is for informational purposes only. It does not provide a diagnosis and never replaces the advice of your doctor or laboratory.