Is Prostate Biopsy Required ?

Enter your PSA, prostate volume and MRI PI-RADS score to get an indicative risk assessment and biopsy sampling overview.

UROWALA | PSA & mpMRI Prostate Biopsy Calculator
UROWALA

PSA & mpMRI correlation for prostate biopsy

Enter PSA, prostate volume and PI-RADS score to calculate PSA density, view the risk grid and generate an indicative biopsy sampling plan.

Patient findings

ng/mL
mL
MRI volume is preferred. TRUS volume can also be used.
Calculate volume from dimensions

Formula: L × W × H × 0.52

PI-RADS v2.1
Digital rectal examination
Biopsy history
Family history / germline variant
5-alpha reductase inhibitor ≥6 months
When selected, PSA is doubled before PSA density is calculated.
years

PSA density & PI-RADS grid

PSA used—
Volume—
PSA density—
PSADPI-RADS 1–2PI-RADS 3PI-RADS 4PI-RADS 5
<5% 5–15% 15–30% 30–55% >55%

Indicative published-cohort ranges for clinically significant cancer (ISUP grade group ≥2). These are not individual predictions.

Enter PSA, prostate volume and PI-RADS score to generate the result.

Important clinical notes

  • Repeat an unexpected PSA and consider confounders such as infection, recent ejaculation and instrumentation.
  • Choose biopsy route, antibiotic prophylaxis and sampling strategy according to local protocol and current guidelines.
  • After a previous negative biopsy, integrate current MRI findings, PSA density and clinical risk rather than relying on one parameter.
  • This calculator supports clinical decision-making and does not replace specialist judgement.

Prepared by Dr. Mohit Sharma, MCh Urology, UROWALA.

Jaipur’s dedicated urology centre, built around the expertise of Dr. Mohit Sharma, an AIIMS-trained Urologist providing cutting-edge laser and surgical care.

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