- Benign prostatic hyperplasia: Age-related prostate enlargement is the most common reason for a gradually rising PSA in older men - more gland tissue simply makes more PSA.
- Prostatitis and urinary infections: Inflammation or infection of the prostate or urinary tract can raise PSA sharply and temporarily.
- Recent activity or procedures: Ejaculation within the previous day or two, vigorous cycling, a recent catheter, prostate exam, or urologic procedure can nudge the number upward.
- Age: PSA naturally drifts higher with age, so what counts as "elevated" differs for a man of 50 and a man of 75.
- Prostate cancer: Prostate cancer can elevate PSA, which is why persistent or clearly rising values deserve structured follow-up rather than either panic or dismissal.
- Repeat the test: PSA is rechecked after several weeks, avoiding ejaculation and heavy exercise beforehand, and after treating any infection.
- A prostate exam: A brief digital rectal exam checks for firm areas, nodules, or asymmetry - information the blood test cannot provide on its own.
- Track the trend: How fast PSA changes over time is often more informative than any single value.
- Refined blood work: The free-to-total PSA ratio helps separate benign enlargement from cancer risk.
- Imaging and biopsy: If suspicion remains, prostate MRI helps decide whether a targeted biopsy is warranted - a decision made with a urologist.