Prostate-specific antigen (PSA) levels can vary with age, and what is considered “normal” often depends on the patient’s age group. Here are the generally accepted age-adjusted reference ranges for PSA (ng/mL):

• Age 40–49: 0.0 – 2.5

• Age 50–59: 0.0 – 3.5

• Age 60–69: 0.0 – 4.5

• Age 70–79: 0.0 – 6.5

👉 A PSA level above these ranges doesn’t always mean prostate cancer—it can also be elevated due to benign prostatic hyperplasia (BPH), prostatitis, urinary tract infections, or even recent ejaculation or procedures.

👉 Trends over time (how PSA changes) and the PSA velocity (rate of increase) can be as important as the absolute number.

Would you like me to also explain what PSA free vs total ratio means? That’s often used to help distinguish between benign causes and cancer.