Levels up to 4.5 ng/mL are typically considered within limits. 0.0 – 6.5

Medical experts generally use age-adjusted reference ranges to determine if a PSA level is "elevated" for a specific individual. Common benchmarks used by urological associations include: Typical PSA Range (ng/mL) High Threshold Concerns 0.0 – 2.5 Levels >2.5 ng/mL may warrant further testing. 50–59 years 0.0 – 3.5 Levels >3.5 ng/mL are often evaluated further. 60–69 years 0.0 – 4.5

As men age, the prostate often undergoes non-cancerous enlargement, such as Benign Prostatic Hyperplasia (BPH) , which naturally raises PSA levels.