• April 16, 2024

Prostate-specific antigen (PSA: prostatic specific antigen) is a serum protein produced by the cells of the prostate gland.

When the prostate gland is enlarged, PSA levels in the blood tend to rise, either due to cancer or to benign (non-cancerous) conditions, such as hyperplasia or prostatic hypertrophy.

As men age, benign conditions of the prostate and cancer of the prostate most often occur.

Common benign conditions that most commonly affect the prostate are prostatitis (inflammation of the prostate) and benign hyperplasia of the prostate (enlarged prostate).

Normal values

The normal intervals by age group commonly used include:

Men under 50 years of age: PSA level less than 2.5
Men aged 50 to 59 years: PSA level less than 3.5
Men from 60 to 69 years old: PSA level less than 4.5
Men over 70 years of age: PSA level less than 6.5

Video Medicine: Normal Values in Blood Report - Part 1 (April 2024).