PSA velocity ng/mL/ano
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The PSA velocity calculator measures the rate of increase in PSA (prostate-specific antigen) levels over time. It calculates the difference between two PSA values (initial and final) divided by the number of years between measurements. This metric helps detect rapid PSA changes, which may indicate prostate tumor growth or other conditions.
To use the tool, input the initial and final PSA values and the time period in years. The simple formula ((PSA_f − PSA_i)/years) provides the annual velocity. Results above 0.75 ng/mL/year are often linked to higher prostate cancer risk, according to medical guidelines.
This tool is useful for monitoring patients with a history of elevated PSA or suspected cancer. However, it's important to note that PSA velocity is just one indicator among others (like imaging and biopsy) and should be interpreted by a healthcare professional. Factors such as prostate inflammation or age also affect results.
Frequently asked questions
What does PSA velocity measure?
It measures the rate of increase in PSA blood levels over years, helping identify sudden changes that may indicate prostate cancer.
Why is calculating PSA velocity important?
High velocities (>0.75 ng/mL/year) suggest increased cancer risk, even if absolute PSA levels are still within normal ranges.
How many PSA measurements are needed for this calculator?
At least two PSA values, spaced 1-2 years apart, are required to calculate clinically meaningful velocity.
Is PSA velocity conclusive for cancer diagnosis?
No. It's a complementary indicator. Diagnosis requires tests like biopsy and physician evaluation.
Can other factors affect the results?
Yes. Prostate inflammation, advanced age, and even physical exercise may temporarily elevate PSA levels.