Interpret total PSA with age-adjusted ranges, free-PSA percentage, PSA density and PSA velocity in one place.
Result
How to use this tool
Enter total PSA and age.
Optionally add free PSA and prostate volume.
Optionally add a later PSA and the months between tests.
Read the age-adjusted status, free percentage, density and velocity together.
Formula & worked example
Total PSA 4 ng/mL at age 55 exceeds the 3.5 reference, with free PSA 25.0% and density 0.10 ng/mL per mL on a 40 mL gland.
Limitations — read this before you rely on it
Interpretation aid only. Reference ranges and thresholds vary by guideline, and PSA never diagnoses cancer alone. This tool is for education only and is not medical advice. Talk to a clinician about any result that worries you, and never change treatment because of a calculator result.
Frequently asked questions
Prostate-specific antigen, a blood marker that rises with prostate enlargement, inflammation and cancer.
Roughly up to 2.5 under 50, 3.5 at 50-59, 4.5 at 60-69 and 6.5 at 70 and over — guidelines vary.
A lower free percentage (often under 25%) is associated with higher cancer risk when total PSA is raised.
The yearly rate of change; a fast rise prompts closer attention even from a modest starting value.
No. Benign enlargement, infection, ejaculation and prostate procedures can all raise it.