Verbatim response from Perplexity
The blood biomarkers that actually matter most for longevity are glucose/HbA1c (blood sugar control), hs-CRP (low-grade inflammation), ApoB (cardiovascular risk), lipid profiles (cholesterol), and kidney/liver function markers like creatinine and ALT/AST.
Core Biomarkers for Longevity
| Category | Key Biomarker | Why It Matters | Optimal Target (if available) |
|---|---|---|---|
| Metabolic Health | HbA1c & Fasting Glucose | High levels increase cardiovascular risk and shorten healthy years; centenarians typically have lower levels starting in their 60s[1][3][4]. | HbA1c: <5.4% (often <5.0% for longevity)[3] |
| Inflammation | hs-CRP | The "classic" marker for chronic, low-grade inflammation ("inflammaging") linked to heart disease, dementia, and mortality[2][3][6]. | <1.0 mg/L[3] |
| Cardiovascular Risk | ApoB (Apolipoprotein B) | More accurate than LDL cholesterol for predicting heart disease risk; reflects the number of harmful lipoprotein particles[2][3][8]. | Lower is better (varies by risk profile) |
| Lipid Profile | Total Cholesterol, LDL, HDL, Triglycerides | Traditional markers for heart disease; centenarians often have higher total cholesterol and iron in the lowest quintile being associated with lower longevity[1][2][6]. | Balanced ratios (e.g., high HDL, low LDL) |
| Kidney Function | Creatinine | High levels indicate reduced kidney function and correlate with lower centenarian probability; however, reduced creatinine in older adults can signal slower kidney decline[1][5]. | Age-adjusted normal range |
| Liver Function | ALT, AST, Alkaline Phosphatase | Elevated liver markers correspond with reduced likelihood of reaching 100; they reflect metabolic stress and organ health[1][2]. | Within normal clinical range |
| Inflammation/Metabolism | Uric Acid | A byproduct of digestion; high levels are linked to inflammation and lower centenarian probability[1]. | Lower is generally better |
How to Interpret These Markers
- Glucose Control: Centenarians consistently exhibit lower glucose and creatinine levels starting in their sixties, suggesting that strict metabolic control is a lifelong habit[1].
- Inflammation is Silent: hs-CRP detects inflammation that doesn't cause obvious symptoms but quietly damages blood vessels over time, making it a critical early warning system[2][8].
- ApoB vs. LDL: While traditional lipid panels measure LDL, ApoB is now considered the "most accurate" marker for cardiovascular risk in longevity medicine, as it directly counts the number of atherogenic particles[3][8].
- Kidney Nuance: While high creatinine is generally bad, reduced creatinine in older adults can paradoxically signal a slower decline in kidney function, highlighting the need for age-specific interpretation[5].
Recommended Testing Strategy
For a comprehensive longevity assessment, prioritize panels that include:
- HbA1c and Fasting Glucose (Metabolic)
- hs-CRP (Inflammation)
- ApoB and Full Lipid Panel (Cardiovascular)
- Comprehensive Metabolic Panel (CMP) containing Creatinine, ALT, AST, and Albumin (Kidney/Liver/Nutrition)
Brands to consider: Medichecks (offers a dedicated "Longevity Blood Testing" panel with 8 key biomarkers), Progevita (tracks 2026-specific biomarkers including hsCRP and ApoB), and Everlywell (provides panels covering ApoB, HbA1c, and hs-CRP) for accessible, high-quality testing.