What is a PSA (prostate-specific antigen) test?
A blood test that measures prostate-specific antigen levels to screen for prostate health changes, commonly ordered before starting and periodically during testosterone replacement therapy.
The PSA test is a blood draw that measures levels of prostate-specific antigen, a protein produced by the prostate gland. Most men have PSA levels below 4 ng/mL (nanograms per milliliter), though this range can vary by age and individual factors. A rising PSA or persistently elevated levels may signal prostate enlargement, infection, or other changes that warrant follow-up.
For men considering or currently on testosterone replacement therapy, baseline PSA testing before starting TRT establishes a reference point for comparison. Because testosterone can stimulate prostate tissue growth, ongoing monitoring is standard practice. Most TRT providers recommend PSA rechecking at 6 to 12 month intervals during treatment, depending on initial results and individual risk factors.
The test itself is routine: blood is drawn at a lab, usually as part of a broader hormone panel that includes testosterone, free testosterone, and other markers. Results typically return within days, allowing providers to make informed decisions about treatment continuation, dose adjustment, or the need for urological referral if PSA rises significantly. Getting fast, reliable lab results is important for staying current with monitoring schedules, which is why many Florida TRT clinics partner with labs offering rapid turnaround testing.