5 longevity biomarkers your annual physical does not run
A standard annual physical runs about 8 markers. A real longevity workup runs about 40. Here are 5 that move the needle on healthy aging and are almost universally skipped.
1. ApoB
ApoB measures the number of atherogenic lipoprotein particles in your blood. It is a better predictor of cardiovascular events than the LDL-C number on your standard lipid panel. Two patients can have the same LDL-C but very different ApoB; the one with higher ApoB has more particles bumping against artery walls.
Optimal: under 80 mg/dL for low-risk adults; under 60 mg/dL for those with personal or family history of cardiovascular disease. Many patients with “normal” LDL-C have ApoB in the 110+ range.
2. Lp(a)
Lipoprotein(a) is a genetic cardiovascular risk marker. Roughly 20% of adults carry an elevated Lp(a) without knowing it. It is the strongest genetic single marker for early heart disease. You test it once in your lifetime; the number does not change meaningfully.
Optimal: under 30 mg/dL. Above 50 is a real risk multiplier. Above 100 is the highest-risk band.
If Lp(a) is elevated, the protocol shifts: we get more aggressive on ApoB, on inflammatory markers, and on lifestyle factors that matter disproportionately for Lp(a) carriers.
3. hs-CRP
High-sensitivity C-reactive protein measures systemic inflammation. Chronic low-grade inflammation is the through-line of almost every chronic disease, including cardiovascular events, cognitive decline, and metabolic syndrome.
Optimal: under 1.0 mg/L. Above 3.0 is a clear warning. A reading above 10 usually means a current infection or acute injury; we recheck before drawing conclusions.
If hs-CRP is chronically elevated, the workup hunts for the upstream driver: gut inflammation, periodontal disease, insulin resistance, chronic infection, autoimmune flare.
4. Homocysteine
Homocysteine is an amino acid that accumulates when the methylation cycle is impaired (often due to B12, folate, or B6 deficiency, or a genetic MTHFR variant). Elevated homocysteine is independently associated with cardiovascular events, cognitive decline, and accelerated brain atrophy.
Optimal: under 8 micromol/L. Most labs flag “normal” up to 15, which is way too high to ignore.
The fix is usually targeted methylation support: methylated B12 (methylcobalamin), methylated folate (L-methylfolate), B6, and sometimes betaine.
5. Omega-3 Index
The omega-3 index measures the EPA + DHA content of your red blood cell membranes. It is one of the cleanest single predictors of long-term cardiovascular health and brain aging.
Optimal: above 8%. The average American adult sits around 4 to 5%, which is the high-risk band.
Hitting an 8% index usually requires 1.5 to 2 g of EPA + DHA daily from a third-party-tested fish oil, plus a diet that emphasizes cold-water fish. Plant-only ALA conversion is not enough for most patients.
What this looks like together
The five markers together cost roughly $260 to $360 cash pay through Quest or LabCorp; some are HSA / FSA eligible. They are part of our standard longevity panel, which goes deeper. The point is not the test, it is the cadence: baseline, intervene, recheck at 12 to 24 weeks, calibrate. See how the longevity workup runs at Copper Sage.