Total PSA Above 4.0 ng/mL: Why the Trend Matters More Than the Number
What total PSA measures, how to read age-adjusted results, and why velocity over time matters more than any single reading.
Free PSA: What the Free-to-Total Ratio Adds in the Gray Zone
Learn how PSA plus free PSA refines prostate screening decisions.
Reading Your Total PSA: A Tissue-Specific Signal From the Prostate
Prostate-specific antigen is a protein enzyme made almost exclusively by the prostate’s glandular cells. It belongs to the kallikrein family of serine proteases (KLK3) and is normally secreted into seminal fluid. Most PSA remains within the ejaculate, but a small fraction passes through the prostate ducts and surrounding tissue into the bloodstream. Available at 2,000+ lab locations and at-home (select states). See FAQs below
Measuring Free PSA: What the Unbound Fraction Adds to a Prostate Reading
Free PSA is the portion of prostate-specific antigen in the bloodstream that is not attached to other proteins. Prostate-specific antigen (PSA) is an enzyme made by prostate gland cells and released mainly into semen; in scientific terms it is a serine protease in the kallikrein family (kallikrein-related peptidase 3, KLK3). Available at 2,000+ lab locations and at-home (select states). See FAQs below
PSA Test: Understanding Your Results
Your PSA biomarker test reveals more than just prostate cancer risk, it's a window into prostate health, inflammation, and aging patterns that most men overlook.
What Is Considered a High LDH Level?
Your LDH level reveals cellular damage across your body, but interpreting "high" depends on context, symptoms, and related biomarkers.
CEA Test: Levels, Results & What They Mean
This tumor marker test is associated with more than just cancer monitoring, it's a window into inflammation, tissue health, and treatment progress tracking.
Faecal Calprotectin Levels in Cancer
This inflammatory marker reveals critical information about intestinal health and potential malignancy that blood tests often miss.
Does High TPO Antibodies Mean Cancer?
High TPO antibodies signal your immune system attacking your thyroid, but they're not a cancer marker.
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