Index/Topics/PSA testing

PSA testing

The use and interpretation of PSA testing in the context of acute bacterial prostatitis.

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Jan 16, 2026
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How do Gleason score and surgical margin status interact with PSA doubling time to predict metastasis?

Gleason score and PSA doubling time (PSADT) are strong, largely independent predictors of metastatic progression after radical prostatectomy, with higher Gleason grades and shorter PSADTs both linked ...

Jan 18, 2026
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Can elevated PSA levels after prostate surgery indicate cancer recurrence?

Yes — a rise in prostate‑specific antigen (PSA) after radical prostatectomy is commonly the earliest laboratory sign that prostate cancer may have recurred, but interpretation depends on timing, magni...

Jan 12, 2026
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How sensitive are modern ultrasensitive PSA assays and how do they affect the undetectable threshold?

Modern "ultrasensitive" PSA assays push analytic detection down into the picogram-per-milliliter range—commonly reported as limits between roughly 0.001 and 0.003 ng/mL (1–3 pg/µL) and historically as...

Jan 21, 2026

How long after acute bacterial prostatitis does PSA return to baseline?

reliably raises serum PSA, but the time for PSA to fall back to a patient’s baseline is variable in the literature — typically weeks rather than days; most authoritative reviews and guidelines advise ...

Jan 20, 2026

Are there age-dependent differences in how ejaculation frequency relates to prostate cancer outcomes?

Large prospective analyses find a modest inverse association between higher ejaculation frequency and subsequent prostate cancer diagnosis, with signals that the protective association appears across ...

Jan 18, 2026

How do free/total PSA ratio and PSA velocity compare to PSA density in predicting clinically significant prostate cancer?

A consistent theme across the literature is that no single PSA derivative is a perfect gatekeeper for clinically significant prostate cancer: percent free PSA (free/total, f/t PSA) improves discrimina...

Jan 6, 2026

How have PSA screening patterns and detection bias been addressed in studies linking sexual activity to prostate cancer risk?

Studies linking sexual activity to prostate cancer risk have grappled with the fact that prostate-specific antigen (PSA) both drives case ascertainment and is itself altered by sexual behavior; invest...