Verbatim response from Perplexity
The blood biomarkers that most consistently matter for longevity are ApoB / lipid risk, glucose control ((HbA1c) and fasting glucose), inflammation ((hs\text{-}CRP)), and kidney function ((creatinine)/eGFR), with uric acid and some liver markers also showing useful signal in aging studies.[2][3][5][1]
What matters most depends on what you mean by “longevity”: the best-supported markers are those that predict cardiovascular events, frailty, and all-cause mortality, not just “biological age” labels.[5][9]
- ApoB: often the single most useful blood marker for long-term cardiovascular risk because it reflects the number of atherogenic particles, which is a major driver of heart disease risk.[3][5]
- HbA1c and fasting glucose: these track chronic glucose exposure and insulin resistance; higher values are repeatedly linked to worse long-term outcomes and earlier healthy-aging loss.[2][5][8]
- hs-CRP: a widely used marker of systemic inflammation; lower is generally better for longevity risk assessment, especially for cardiometabolic risk.[2][3][5][6]
- Kidney function markers: creatinine and related measures matter because kidney decline is strongly tied to mortality and overall aging risk.[1][4]
- Lipid panel: LDL-C, triglycerides, HDL-C, and ideally ApoB; total cholesterol alone is less informative than particle-based measures like ApoB.[1][2][6]
- Uric acid: in a centenarian study, lower levels were associated with a higher chance of reaching 100, though this is associative rather than proof of causation.[1]
- Liver markers: ALT, AST, GGT, ALP, and albumin showed associations with centenarian status in the same study, but they are better viewed as general health markers than direct longevity levers.[1]
- CBC-derived markers: a complete blood count can surface anemia or immune patterns relevant to aging, and markers like the neutrophil-to-lymphocyte ratio are used as inflammation signals.[2][5][7]
If you want the most practical core longevity panel, the strongest candidates from the evidence are:
- ApoB
- HbA1c
- Fasting glucose
- hs-CRP
- Creatinine/eGFR
- Lipid panel
- CBC
- Uric acid
- ALT/AST/GGT
- Albumin[1][2][3][5][7]
Two important caveats:
- Many “longevity biomarker” panels are marketed more broadly than the evidence supports; the strongest data are for markers that predict hard outcomes like death and cardiovascular disease, not for any single “age score.”[5][9]
- Some biomarkers associated with centenarian status may reflect underlying health, nutrition, or disease burden rather than directly causing longer life.[1]
If you want, I can turn this into a minimal blood test list, an advanced panel, or a what-to-ask-your-doctor interpretation guide.