PSA (Prostate Specific Antigen): What Your Result Means

Result guide · Men's Health

Content last reviewed 2026-09-12 · Educational information — not medical advice

Quick answer

PSA screens prostate activity, not cancer per se. BPH, prostatitis, cycling, ejaculation, and age all elevate it. Trends, velocity, free:total ratios, and shared decision-making replace reflexive biopsies of the PSA era.

What is PSA (Prostate Specific Antigen)?

PSA liquefies semen; small amounts serum-leak normally. Elevated by prostate ENLARGEMENT (benign), INFLAMMATION (prostatitis), MANIPULATION (biopsy/cycling/exam), and CANCER. Age-specific references acknowledge growth: ~2.5 for 40s, 4.5 for 60s as traditional ceilings.

Typical reference interval: Age-adjusted approximations: 40s ≤2.5 · 50s ≤3.5 · 60s ≤4.5 · 70s ≤6.5 ng/mL.. Laboratories differ — the interval printed on YOUR report always governs.

If your PSA (Prostate Specific Antigen) is high

Common reasons PSA (Prostate Specific Antigen) runs above the reference interval:

  • Benign prostatic hyperplasia — volume-driven leakage — most common cause
  • Prostatitis — inflammation spikes dramatically; recheck 4-6 weeks post-treatment
  • Urinary retention/catheterization —
  • Prostate cancer — the concern — probability rises with level and abnormal DRE
  • Recent ejaculation/cycling/procedures — transient artifacts — abstain 48h before draws

If your PSA (Prostate Specific Antigen) is low

Common reasons PSA (Prostate Specific Antigen) runs below the reference interval:

  • Finasteride/dutasteride — halves PSA — multiply by 2 mentally while on these
  • Obesity — hemodilution lowers values — misleading reassurance in high-risk bodies
  • Some 5-alpha-reductase users aggressively —

Symptoms worth knowing

PSA itself silent. Prostate pathology symptoms: weak stream, nocturia, incomplete emptying (BPH); urinary burning/pelvic discomfort (prostatitis); advanced cancer brings bone pain (spine/pelvis metastases predilection).

What usually happens next

  1. First-ever elevation → repeat 4-6 weeks later avoiding the artifact list
  2. Persistent elevation → free:total ratio (cancer favors LOW free%), possibly PHI/mpMRI
  3. Biopsy decisions integrate DRE, family history, ethnicity (higher Black male risk), and shared decision-making
  4. Velocity matters: >0.75/year rise warrants attention

Get your PSA (Prostate Specific Antigen) checked

These lab tests measure PSA (Prostate Specific Antigen) directly. Ordering online takes a few minutes and results arrive securely.

Order PSA TotalFree:Total PSA Ratio

We may earn a commission when you order through partner links on the following pages. Educational information here never replaces advice from a qualified healthcare provider.

Panels that include this value

PSA (Prostate Specific Antigen) appears as one line inside these broader panels — better value than ordering single markers alone:

Baseline Health Panel

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Frequently asked questions about PSA (Prostate Specific Antigen) results

USPSTF says don't screen — my urologist disagrees. Who's right?

Both hold pieces: USPSTF weighed overtreatment harms; urologists see preventable deaths. Current consensus landed on INDIVIDUALIZED shared decision-making for ages 50-70 (45 for high-risk). You're allowed to want the test.

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