What Tests Should Be in a Longevity Blood Panel?

The Core Longevity Blood Panel

A useful longevity blood panel doesn’t need to be exhaustive — it needs to be actionable. The most clinically validated markers for healthy aging centre on cardiovascular risk, metabolic health, and inflammation. These three areas account for the majority of preventable chronic disease and premature death, making them the logical foundation of any longevity-focused testing strategy.

Testing frequency matters too. For most healthy adults, running a core panel once or twice a year is a reasonable starting point. That said, the right interval depends on individual risk, existing conditions, and whether you’re actively trying to shift a marker. These are patterns worth discussing with a clinician rather than fixed rules to follow independently.

For a broader view of how blood testing fits into the wider picture of longevity assessment, including when testing itself can become counterproductive, see our guide on Longevity Testing and Trade-Offs.

Key Markers and What They Measure

1. ApoB and Lipid Profile

A standard lipid panel — including LDL, HDL, triglycerides, and total cholesterol — provides a reasonable baseline picture of cardiovascular risk. However, ApoB (apolipoprotein B) is increasingly preferred by longevity-focused clinicians because it measures the number of atherogenic particles directly, rather than just their cholesterol content.

Research suggests that ApoB is a stronger predictor of cardiovascular events than LDL-C alone, particularly in people with metabolic dysfunction or elevated triglycerides. Lipoprotein(a), or Lp(a), is worth including at least once, as it reflects a largely genetic cardiovascular risk factor that diet and lifestyle have limited influence over. Knowing your Lp(a) level helps set realistic expectations about achievable risk reduction.

2. HbA1c and Fasting Glucose

HbA1c reflects average blood sugar over the preceding two to three months, making it more informative than a single fasting glucose reading alone. Together, these two markers give a clear picture of metabolic health and insulin sensitivity — both of which are closely linked to biological aging.

Insulin resistance is now recognised as a key driver of numerous age-related diseases, including cardiovascular disease, type 2 diabetes, and cognitive decline. Catching dysregulation early — before it meets the clinical threshold for diabetes — allows for meaningful lifestyle intervention. Fasting insulin can also be included to provide additional sensitivity, though it’s less standardised across labs.

3. High-Sensitivity CRP

High-sensitivity CRP (hs-CRP) is the most widely used blood marker for systemic inflammation. Chronic low-grade inflammation — sometimes called “inflammaging” — is consistently associated with accelerated biological aging and increased risk of heart disease, cancer, and neurodegeneration.

Importantly, hs-CRP is sensitive to short-term factors including illness, intense exercise, and stress. For this reason, a single elevated reading requires context. Testing twice per year and looking at trends over time is more informative than reacting to any one result.

4. Kidney and Liver Markers

Organ function markers are often overlooked in longevity panels but matter considerably. Creatinine, eGFR (estimated glomerular filtration rate), and cystatin C assess kidney function. ALT, AST, and GGT reflect liver health. These markers help detect early dysfunction before symptoms appear, and they also provide context for interpreting other results — for example, elevated inflammation markers may partly reflect impaired clearance rather than active disease.

5. Complete Blood Count (CBC)

A full blood count screens for anaemia, infection, and immune irregularities. While not specific to aging, it provides useful baseline health context and can flag issues that explain fatigue, poor recovery, or other symptoms that might otherwise prompt unnecessary additional testing.

How to Interpret Your Results

Individual markers rarely tell the full story in isolation. An elevated LDL particle number, for instance, carries different implications depending on whether hs-CRP is normal, whether metabolic markers look healthy, and whether there is a family history of cardiovascular disease.

The most useful approach is to look at the overall pattern across markers, track changes over time, and interpret results in the context of lifestyle, symptoms, and personal risk factors. A clinician familiar with longevity medicine can help distinguish results that genuinely warrant action from those that fall within normal biological variation.

Learn more in our complete guide to longevity at longevityinsights.co.uk.

Additional Tests Worth Knowing About

Epigenetic Clocks

Epigenetic age tests — sometimes called biological age clocks — analyse DNA methylation patterns to estimate how old your body is functioning relative to your chronological age. In research settings, these tools have shown real promise for predicting disease risk and mortality at a population level.

However, their accuracy and actionability at the individual level remain genuinely limited. Results can vary across different testing platforms, and the practical question of what to do with a specific result is often unclear. Current evidence does not yet support using epigenetic clocks as reliable diagnostic tools for individuals. They are worth understanding, but not worth over-interpreting.

Telomere Length

Shorter telomeres are associated with cellular aging and increased disease risk at a population level. In principle, telomere length reflects cumulative cellular wear and tear. In practice, individual test results carry significant measurement variability, and the relationship between a single telomere reading and an individual’s actual health trajectory is not straightforward.

For most people, telomere testing adds limited actionable value over and above the core panel markers described above. It can be a motivating data point for some, but it should not drive clinical decisions at this stage of the evidence.

Hormonal and Nutritional Markers

Depending on age, symptoms, and clinical context, hormonal testing — including thyroid function, testosterone, DHEA-S, and cortisol — can add meaningful information. Similarly, vitamin D, B12, magnesium, and iron status are worth checking periodically, particularly if energy, immune function, or recovery are concerns.

These are best considered as targeted additions based on individual need, rather than fixed components of every panel. For more detail on which markers are most relevant and at what frequency, see our article on how often to run a longevity panel.

References and Resources

FAQ: What Tests Should Be in a Longevity Blood Panel?