PSA Doubling Time (PSADT) Calculator
Calculates PSA velocity and doubling time for men with prostate cancer or rising PSA. PSADT <10 months after prostatectomy suggests systemic progression. Requires ≥2 PSA measurements.
Score interpretation
PSADT ≥15 months — slow rise; lower risk of systemic progression
→ Continue regular PSA surveillance; reassess clinical and imaging status
PSADT 10–14 months — intermediate concern
→ Closer monitoring; consider PSMA PET-CT staging; discuss systemic therapy with urology/oncology
PSADT <10 months — rapid PSA rise; higher risk of systemic recurrence
→ Urgent urology/oncology review; PSMA PET-CT scan; consider early ADT or radiotherapy; clinical trial consideration
Interpretation bands for the PSA Doubling Time. Apply clinical judgement and local guidance.
References
- Pound CR et al. Natural history of progression after PSA elevation following radical prostatectomy. JAMA. 1999;281(17):1591–1597.
Related
Curated clinical cross-links plus same-class fallbacks.
- Gleason Score / Grade Group for Prostate Cancer · Prostate Cancer
- Prostate Cancer Risk Stratification (NICE / EAU) · Prostate Cancer
- UCSF-CAPRA Score for Prostate Cancer · Prostate Cancer
- D'Amico Risk Classification for Prostate Cancer · Prostate Cancer
- PSA Velocity and PSA Density · Prostate Cancer
- D'Amico Risk Stratification for Localised Prostate Cancer · Prostate Cancer
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.