Longevity · Cardiovascular Testing

Longevity Blood Tests: The Complete Guide to What to Ask For — and Why

A "longevity blood test" isn't one test — it's a small set of markers that predict where your arteries are heading over decades, not just whether disease has already arrived. Beyond the standard lipid panel, the markers with the strongest evidence behind them are ApoB, Lp(a), hs-CRP, and two calculated metabolic indices, the TyG Index and AIP — all derivable from blood most people already have drawn once a year.

A standard lipid panel — total cholesterol, LDL-C, HDL-C, triglycerides — was built to answer one question: is disease present right now? It's a good tool for that. It was never designed to answer a different question a lot of people are now asking earlier in life: where is my cardiovascular system trending over the next 20–40 years? That's a longer-horizon question, and it needs a slightly different panel.

What "optimal vs normal" actually means here

Standard lab ranges are built to flag disease that has already developed. Longevity-optimal targets are stricter — they're the levels associated with the lowest lifetime cardiovascular risk, not just "not diagnosable yet." Both are valid; they're answering different questions. Nothing below replaces what your doctor already ordered — it's the fuller reference frame to read those same numbers against.

The core longevity panel

1. ApoB — the particle count your LDL-C can miss

LDL-C measures the cholesterol mass inside your LDL particles. ApoB counts the particles themselves — one ApoB molecule per atherogenic particle (LDL, VLDL remnants, Lp(a)). In roughly 20–25% of people — especially with elevated triglycerides, insulin resistance, or metabolic syndrome — LDL-C and ApoB disagree, and when they do, ApoB tracks risk more closely.

Risk categoryApoB target
Moderate risk<100 mg/dL
High risk<80 mg/dL
Very-high risk<65 mg/dL

Source: ESC/EAS 2019 Dyslipidaemia Guidelines (ehz455), secondary goal — reaffirmed unchanged in the 2025 Focused Update (ehaf190).

2. Lp(a) — the one worth knowing once

Lp(a) is genetically determined and largely unaffected by diet or exercise — which is exactly why it's worth measuring, once, in every adult. Unlike LDL-C, it doesn't move much over a lifetime, so a single result is usually enough to know where you stand.

Lp(a) levelWhat it means
<75 nmol/L (<30 mg/dL)Rule-out range
75–125 nmol/LGrey zone
≥125 nmol/L (>50 mg/dL)Clinically significant — consider family screening

Source: EAS 2022 Lp(a) consensus statement (ehac361). No approved Lp(a)-lowering drug exists yet — pelacarsen and olpasiran remain investigational, with outcomes data expected through 2026.

3. hs-CRP — residual inflammatory risk

High-sensitivity CRP flags inflammation that contributes to plaque activity independent of your cholesterol numbers. It's a modifier, not a stand-alone diagnosis — a persistently elevated value is a reason to look closer, not a treatment decision on its own.

hs-CRPWhat it means
<1 mg/L (ideally <0.5)Longevity-optimal
1–3 mg/LAverage
>3 mg/L, or >2 mg/L persistentlyRisk modifier — ESC/EAS 2025 (ehaf190)

4. TyG Index and AIP — metabolic markers hiding in your existing panel

Both of these are calculated, not separately drawn — they're derived from triglycerides, fasting glucose, and HDL-C, values most panels already include. They flag insulin resistance and plasma atherogenicity earlier than fasting glucose alone often does.

Full detail — including formulas and interpretation — lives in our Complete Guide to Cardiometabolic Health.

Why these five, and not more

It's tempting to add every marker with a paper behind it. We hold a narrower line: a marker earns a place in a consumer report only if it's DOI-verified, tied to a named guideline or validated cohort, and calculable from data CardioIQ's panel already collects. Markers like SII, CRP/Albumin ratio, or FIB-4 didn't clear that bar for this panel — not because they're uninteresting, but because they require inputs CardioIQ doesn't measure, or rest on cutoffs that aren't yet guideline-established.

How to actually get these tested

  1. Ask for ApoB and Lp(a) by name — many standard panels don't include them automatically.
  2. Lp(a) needs testing once, not annually, unless your lab used an older isoform-sensitive assay.
  3. hs-CRP, TG, glucose are usually already on a metabolic panel — TyG and AIP can be calculated from values you likely already have.
  4. Bring the results to your physician — this panel is a starting reference frame, not a replacement for their read on your full history.

For a side-by-side of what a standard panel includes vs. what a fuller advanced panel adds, see our Standard vs. Advanced Lipid Panel guide.

FAQ

Do I need ApoB if my LDL-C is already normal?

Possibly — LDL-C and ApoB disagree in roughly 20–25% of people, most often with elevated triglycerides, insulin resistance, or metabolic syndrome. If any of those apply to you, ApoB gives a more complete picture.

Is Lp(a) hereditary?

Yes — it's genetically determined and largely fixed from early adulthood. That's why testing it once, and telling first-degree relatives if it's elevated, matters more than retesting it.

How often should I retest this panel?

Lp(a): once, in most cases. ApoB, lipids, hs-CRP, and the metabolic indices: alongside your regular annual panel, or sooner if you've made a significant treatment or lifestyle change your physician wants to track.

A note on how to read this: This guide explains what these markers are and the reference frames they're read against — it is interpretation, not diagnosis, and it does not replace a conversation with your physician. Longevity-optimal targets are stricter than standard lab ranges by design; both are valid lenses on the same numbers. If any result concerns you, bring it to your doctor.
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Dr. Tea Gamezardashvili, MD, PhD, MHA, FACC
Preventive cardiologist & lipidologist. President, Georgian Atherosclerosis Association. National Coordinator, EAS Lipid Clinic Network (Georgia). Founder, CardioIQ.