Published on: 7/15/2025
Should I stop finasteride before a PSA test?
Finasteride can lower PSA levels, so your doctor might adjust your PSA test results if you're taking it. You should talk to your doctor about whether to stop finasteride before the test.
Explanation
Finasteride is a medication that can affect PSA (prostate-specific antigen) levels. PSA is a protein produced by the prostate gland, and its levels are often checked to screen for prostate issues.
Effects of Finasteride
- Lowered PSA Levels: According to the studies, finasteride can significantly reduce PSA levels. This means that if you are taking finasteride, your PSA test results might be lower than they would be without the medication.
- Adjustment Needed: Doctors often adjust PSA test results for patients taking finasteride to get an accurate understanding of prostate health.
What to Do
- Consult Your Doctor: It is important to talk to your doctor about your medication and whether you should stop taking finasteride before a PSA test. Your doctor will consider how finasteride affects your PSA levels and decide the best course of action for your situation.
(References)
- Etzioni RD, Howlader N, Shaw PA, Ankerst DP, Penson DF, Goodman PJ, & Thompson IM. (2005). Long-term effects of finasteride on prostate specific antigen .... The Journal of urology, 16093979.
- D'Amico AV, & Roehrborn CG. (2007). Effect of 1 mg/day finasteride on concentrations of serum .... The Lancet. Oncology, 17196507.
- Guess HA, Gormley GJ, Stoner E, & Oesterling JE. (1996). The effect of finasteride on prostate specific antigen. The Journal of urology, 7490873.
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