PSA Density Calculator

Your details

The ellipsoid formula multiplies the three dimensions by 0.52 and is used by most radiology labs. The bullet formula multiplies by 0.65 and fits smaller, more spherical glands better.
The anteroposterior (front-to-back) diameter of the prostate as measured on imaging. Also called the AP diameter.
cm
The left-to-right (transverse) diameter of the prostate.
cm
The superior-to-inferior (head-to-toe) diameter of the prostate.
cm
Your total serum PSA result from a blood test. PSA is measured in nanograms per millilitre (ng/mL).
ng/mL
Used only to show the age-specific upper reference limit for total PSA. PSA density itself has no age-specific cut-off in current guidelines.
years
PSA densityIntermediate-low
0.146ng/mL/mL

Serum PSA divided by prostate volume

Prostate volume37.6mL
EAU risk bandIntermediate-low (PSAD 0.10-0.15)
Guideline action threshold0.15ng/mL/mL
PSAD above threshold-0.004ng/mL/mL
Age-specific total PSA reference4.5ng/mL
0.146 ng/mL/mL
Low<0.1Intermediate-low0.1-0.15Intermediate-high0.15-0.2High0.2+

Your PSA density of 0.146 is below the 0.15 action threshold.

  • Your estimated prostate volume is 37.6 mL, giving a PSA density of 0.146 ng/mL/mL.
  • A PSAD of 0.10 to 0.15 is the EAU intermediate-low band. It is below the 0.15 action threshold, but follow-up is usually guided by MRI findings and other clinical factors rather than PSAD alone.
  • The 0.15 threshold is not adjusted for age. Current EAU guidance publishes PSA density risk bands that apply to all ages, so do not assume a higher cut-off applies because you are older.
  • For context, the age-specific upper reference limit for TOTAL PSA (not PSA density) in men aged 60-69 is about 4.5 ng/mL; your total PSA is 5.50 ng/mL.
  • Volume was estimated with the ellipsoid (x 0.52) formula using your three imaging dimensions. Ask your radiologist which formula was used in their report to ensure consistency.
  • PSAD is one input among several (PSA velocity, free-to-total PSA ratio, MRI PI-RADS score, and family history) that a urologist weighs together before recommending a biopsy.

Next stepContinue monitoring with your doctor on the schedule they recommend, and share this result at your next appointment. PSA density is only one part of the assessment.

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