Longevity Medicine
What Biomarkers Predict Longevity? The Tests That Matter Most
Last reviewed: May 2026 · Haute MD Editorial Team
Standard annual blood panels — complete blood count, basic metabolic panel, and a standard lipid panel — were designed to diagnose established disease, not to predict or prevent it. A growing body of evidence identifies specific biomarkers that predict cardiovascular events, cancer risk, metabolic decline, cognitive trajectory, and all-cause mortality far more accurately than standard labs — in many cases identifying elevated risk 10-20 years before disease becomes clinically apparent. Knowing which biomarkers matter most, what optimal (not just 'normal') values look like, and how to access them is foundational to a precision longevity medicine approach.
Cardiovascular longevity biomarkers
ApoB — apolipoprotein B measures the total number of atherogenic lipoprotein particles. More accurate than LDL-C as a cardiovascular mortality predictor; particularly superior in insulin-resistant, diabetic, or hypertriglyceridemic patients where LDL-C underestimates risk. Optimal — below 80 mg/dL for most adults; below 60 mg/dL for high-risk patients. Lp(a) — lipoprotein(a) is a genetically determined particle independently associated with myocardial infarction, stroke, and aortic valve disease. Carried by 20% of the population; not lowered by statins; changes management. Should be tested once in every adult. Optimal — below 30 mg/dL (below 75 nmol/L). hsCRP — high-sensitivity C-reactive protein measures vascular inflammation. Optimal — below 1.0 mg/L. Coronary artery calcium (CAC) score — imaging biomarker; the most powerful predictor of cardiac events in asymptomatic adults. Optimal — 0 in someone under 60 who is not on a statin.
Metabolic and hormonal longevity biomarkers
Fasting insulin — the most sensitive early marker of insulin resistance, predicting metabolic syndrome and cardiovascular risk 10-15 years before glucose elevation. Not included in standard panels. Optimal — below 5-8 μIU/mL. HOMA-IR — calculated from fasting glucose and insulin; quantifies insulin resistance. Optimal — below 1.5. HbA1c — average blood glucose over 3 months. Optimal — below 5.4%; prediabetes range 5.7-6.4%. Testosterone (free and total, with SHBG) — low testosterone is independently associated with cardiovascular mortality and metabolic dysfunction in men. IGF-1 — reflects growth hormone axis; low IGF-1 associates with reduced muscle mass, metabolic dysfunction, and mortality. Vitamin D — optimal above 50 ng/mL; deficiency (below 30 ng/mL) associates with cardiovascular, cancer, and metabolic risk.
Inflammatory and aging-specific biomarkers
Homocysteine — elevated homocysteine (above 10 μmol/L) predicts cardiovascular, cognitive, and all-cause mortality; addressable with B vitamins (folate, B12, B6). Omega-3 index — measures EPA+DHA in red blood cells; below 4% is high-risk for cardiovascular events; optimal above 8%. GrimAge (epigenetic clock) — the biological age measure most predictive of mortality and disease. DunedinPACE — the pace of aging clock; identifies how fast you are currently aging, sensitive to lifestyle interventions. Ferritin — low ferritin (below 50 ng/mL in women, below 100 in men) impairs energy metabolism and cognitive function; elevated ferritin (above 200-250) reflects inflammation or iron overload. VO2 max — not a blood biomarker but the most powerful single longevity predictor available.
Frequently Asked Questions
What blood tests should everyone get for longevity?
The longevity-focused biomarker panel beyond standard labs — ApoB, Lp(a) (once), fasting insulin, HOMA-IR, hsCRP, homocysteine, omega-3 index, free testosterone (men), DHEA-S, comprehensive thyroid panel (TSH + free T4 + free T3 + TPO antibodies), vitamin D, ferritin, and uric acid. These tests are widely available but typically not included in standard annual panels — requesting them specifically from your physician or ordering through direct-to-consumer labs is necessary.
What is an optimal cholesterol level vs. a normal one?
Standard 'normal' LDL-C is below 130 mg/dL; 'optimal' by conventional guidelines is below 100 mg/dL. In longevity medicine, ApoB below 80 mg/dL is the primary target — more clinically meaningful than LDL-C. For high-risk individuals (elevated Lp(a), family history, elevated CAC score), ApoB below 60 mg/dL is recommended by some guidelines. 'Normal' represents the average of a population with significant cardiovascular disease prevalence — not a target for health optimization.
Can I order longevity biomarkers without a doctor?
Yes — direct-to-consumer testing platforms allow ordering most advanced longevity biomarkers without a physician order. Function Health (founded by longevity physician Dr. Mark Hyman's team) offers 100+ biomarkers including most longevity markers at approximately $499/year. LabCorp and Quest Diagnostics offer individual test ordering through their direct access programs. Ulta Lab Tests, Walk-In Lab, and True Health Diagnostics offer additional options. Results without clinical interpretation are less valuable — a longevity physician who can act on abnormal findings produces more benefit from the data than testing alone.
What is the most important longevity biomarker?
VO2 max is the single most powerful longevity predictor — going from low-fit to moderate-fit reduces all-cause mortality by approximately 50%. Among blood biomarkers, fasting insulin (predicting metabolic trajectory 10-15 years out) and ApoB (predicting cardiovascular trajectory) are arguably the highest-leverage tests for the most common causes of premature death. Lp(a) is the highest-impact single test because it identifies genetic cardiovascular risk in 20% of people who have no other way to know they carry it.
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