Longevity Clinic Panels: Which Tests Are Worth Paying For
Longevity clinics sell forty markers and a biological-age score. Only a handful have decades of outcome data behind them. Here is how to tell the signal from the dashboard.
A nine-page lab report is a very effective piece of design. Whether it is a very effective piece of medicine is a separate question.
Forty-odd markers. A handful flagged in red with a small warning triangle. And at the top, in the largest font on the page, a number telling you your body is four years older — or six years younger — than your birth certificate claims. It reads like information. A surprising amount of it is closer to weather.
I have read a fair number of these panels now, and the pattern that keeps repeating is uncomfortable: the genuinely useful part is usually small, cheap, and boring, while the expensive part is usually the part with the nicest chart. That is not an accusation of fraud. It is a description of what happens when a real scientific question — how fast is this person ageing? — meets a consumer market that needs something to sell before the science has finished arguing.
So this is an attempt to sort the panel. Which numbers have decades of outcome data behind them, which ones are promising but immature, and which ones are essentially decoration you are paying four figures for.
What a panel actually buys you
The pitch for a longevity clinic is that ordinary medicine is reactive — it waits for you to get sick — while a comprehensive panel is proactive, catching the drift years before it becomes a diagnosis. That pitch is not wrong in principle. Cardiovascular disease and type 2 diabetes both spend a decade or two being quietly measurable before they are symptomatic, and standard care genuinely does under-order a few of the tests that see that early.
But there is a step being skipped. A test is only worth its cost if the result changes what you do, and if what you then do has been shown to change how things turn out. That is a chain with three links, and most of the flashier tests break at the second or third. Knowing a number is not the same as being able to act on it. Being able to act on it is not the same as the action helping.
Hold every line on the report up to that chain and the page sorts itself quickly.
The markers that earn their place
ApoB. If I could add one test to the standard panel for everyone, this would be it. A conventional lipid panel gives you LDL cholesterol — the mass of cholesterol carried in the particles. ApoB counts the particles themselves, one apolipoprotein B molecule per atherogenic particle. When the two disagree, which happens often in people with high triglycerides or metabolic syndrome, the particle count tracks cardiovascular risk more faithfully. It is a cheap, standardised, widely available blood test. Very few routine check-ups order it.
Lipoprotein(a). Largely genetically determined, largely stable across your life, and a meaningful independent risk factor at high levels. Because it barely moves, this is the rare test you can do once and file away — but roughly one in five people carries a raised level and most of them have never been told. A single measurement is one of the highest-value things on this entire list.
Fasting insulin, or HOMA-IR alongside HbA1c. HbA1c is standard and useful, but insulin resistance shows up in fasting insulin years before glucose starts drifting. This is the metabolic equivalent of watching the engine temperature rather than waiting for steam.
hs-CRP. A general inflammation signal. It is non-specific — an infection, a hard workout, or a bad week of sleep will move it — but persistently raised values in an otherwise well person are worth understanding. The inflammation-and-cardiovascular-risk line of work associated with Paul Ridker's group put this marker on solid clinical ground.
Blood pressure, measured properly. Deeply unglamorous, and the single most evidence-backed number in the whole conversation. Properly means seated, rested, correct cuff size, more than one reading, and ideally some measurements taken at home rather than only in the anxious five minutes at a clinic.
Cardiorespiratory fitness. A measured VO2 max, or a decent submaximal estimate. Large cohort work following patients through exercise testing — including a widely cited Cleveland Clinic analysis published in JAMA Network Open in 2018 — found fitness to be one of the strongest available predictors of all-cause mortality, with no observed ceiling of benefit. It is also directly trainable, which is exactly what you want in a marker.
Strength and physical function. Grip strength, a sit-to-stand count, gait speed. Grip strength emerged from the large international PURE cohort as a surprisingly robust predictor of mortality. These cost nothing, take three minutes, and no consumer panel bothers with them because you cannot put them in a vial.
Coronary artery calcium, for the right person. A CAC score is a low-dose CT that counts calcified plaque in the coronary arteries. For someone at genuinely intermediate risk who is undecided about starting a statin, a score of zero versus a score of three hundred is decision-changing information. For a twenty-eight-year-old with no risk factors it is radiation with a bill attached. Right test, right person, or it is worse than nothing.
The biological age problem
The headline number — your biological age is 41.3 — deserves its own section, because it is simultaneously the most compelling thing on the report and the least ready.
The underlying science is real and genuinely interesting. Epigenetic clocks read DNA methylation patterns across the genome and predict age from them. Steve Horvath's 2013 clock showed the trick works. Later generations trained on health outcomes rather than chronological age alone — PhenoAge from Morgan Levine's work, GrimAge, and DunedinPACE, which estimates the current rate of ageing rather than an accumulated age. As population-level research instruments these are a meaningful advance.
The trouble is the leap from population instrument to individual dashboard. Technical reliability has been a live problem: the same biological sample, split and run twice, could return biological ages differing by years on early clocks, and a fair amount of subsequent work — including methodological papers in Nature Aging — has gone into reducing that noise. If a test's measurement error is comparable to the change you are hoping to detect, then tracking it quarterly and adjusting your supplement stack in response is not a feedback loop. It is reading tea leaves with better typography.
And even where the number is stable, its clinical actionability is thin. There is no intervention that has been shown, in a randomised trial, to lower your epigenetic age and thereby extend your life. The clock might be measuring something true. Nobody has yet demonstrated that pushing on the clock pushes on the thing.
Which is a shame, honestly. It is the number everyone wants. It is also the number I would pay the least for.
Where the evidence thins out
Telomere length. Beautiful biology, poor individual test. Measurement variability between labs and between methods is high, and the association with outcomes in any one person is weak enough that the result rarely changes anything. A shorter-than-average telomere reading generates worry and no action.
Whole-body MRI screening. The most seductive item on the menu, and the one where the argument is genuinely unsettled. It does occasionally find something important early. It also finds a great many incidentalomas — benign oddities that were never going to hurt you, but which now need a biopsy, a follow-up scan, and six weeks of dread to rule out. There is no randomised evidence that screening asymptomatic people this way reduces mortality, and the harms of the follow-up cascade are real and under-discussed in the marketing.
Broad micronutrient panels. Twenty-eight vitamin and mineral levels, most of which have no validated reference range for a well-fed adult and no established relationship to any outcome. They reliably produce two or three yellow flags, which reliably produce a supplement recommendation.
IgG food-sensitivity testing. Multiple allergy and immunology societies have explicitly advised against this for diagnosing food intolerance. IgG to a food is closer to a record of what you have eaten than a marker of harm.
Consumer microbiome sequencing with dietary recommendations. The research is legitimate and moving fast. The gap between "we can sequence your gut bacteria" and "therefore eat these specific foods" is currently being filled with confidence rather than evidence.
Anything measured only to justify the supplement sold beside it. The tell is structural: when the clinic that runs the test also sells the intervention the test recommends, the incentive is doing quiet work on your behalf, and not in your favour.
The primary care comparison nobody makes
Here is the arithmetic worth doing before you sign up.
An annual longevity clinic membership commonly runs into the thousands, sometimes well beyond, and the marginal information over a good comprehensive check-up is often three or four blood tests — the ones I listed above — plus a fitness assessment and a dashboard.
The alternative is not "do nothing". It is to take the same list to a primary care physician who will order most of it, have insurance cover a good deal of it, and then — this is the part that actually matters — see the results in the context of your history, your family, your medications, and your last five years of numbers. A panel with no clinician attached is a spreadsheet. A clinician with fewer numbers but real continuity generally beats it.
The honest case for the clinics is that they are fast, they order things primary care forgets, and for some people the fee itself is the mechanism that produces attention. That is a real service. It is worth knowing that it is the service you are buying.
Five questions worth asking before you pay
Ask these before the credit card comes out, and ask for answers you can read afterwards, not answers given warmly in a consultation room.
Which specific decisions will this panel change? Not "we build a picture of your health" — which threshold on which marker leads to which action. If nobody can name one, you are buying reassurance.
What is the test-retest variability of the flagship measurement? Any lab that cannot tell you how much its own biological-age number wobbles on a repeat sample should not be selling you a trend line.
Does the clinic sell what it recommends? A supplement stack, a peptide, a hormone protocol. Ask what fraction of revenue comes from products versus assessment.
What happens to an incidental finding? Who follows it up, who pays for the second scan, and does your regular physician receive the report?
Which of these could my primary care doctor order tomorrow? Take the actual list. Most clinics will answer this honestly if you ask directly, and the answer is usually "most of them".
The short list
Generally worth the money: ApoB. Lp(a), once. Fasting insulin with HbA1c. hs-CRP. Properly measured blood pressure. A real fitness assessment. Grip strength and a sit-to-stand test. A CAC score if you are at intermediate cardiovascular risk and genuinely undecided about treatment.
Worth being sceptical of: Biological-age scores sold as a trackable metric. Telomere length. Whole-body MRI in an asymptomatic person with no risk factors. Broad micronutrient panels. IgG food-sensitivity testing. Microbiome-driven diet prescriptions. Any test bundled with the product that fixes it.
None of this is medical advice, and none of it substitutes for a doctor who knows you. It is a way of reading a price list.
The boring answer, stated plainly
The uncomfortable thing about this entire field is that the interventions with the strongest evidence behind them are the ones you already know. Sleep. Resistance training and cardiovascular work. Blood pressure control. Not smoking. Alcohol kept low. Protein and fibre. Social connection, which turns out to be as load-bearing as any of the rest.
Measurement is genuinely useful when it produces motion. I have watched a single number change someone's behaviour more effectively than a decade of general encouragement, and I do not want to be dismissive about that — if a panel is what gets you into a gym and off a second bottle of wine, the panel earned its fee whatever the marker's evidence base.
But there is a failure mode worth naming, and I think it is the more common one. Measurement can become a substitute for the thing itself. It feels like progress. It generates charts, comparisons, and a quarterly ritual. And it is considerably more comfortable than the actual work, which has no dashboard and never produces a satisfying number.
The tests that matter are mostly cheap. The habits that matter are mostly free. The expensive middle layer is where the industry lives.
Questions people actually ask
Is a longevity clinic a scam? Mostly no, and that is what makes it hard. The good ones order genuinely useful tests that standard care neglects and give you time with someone who reads them. The problem is bundling: three or four high-value tests sold inside a package of twenty-five, at a price set by the package. You are usually paying a large premium for a small amount of real signal.
My panel flagged something red. Should I panic? No, but do take it to a physician who knows your history. Panels flag against population reference ranges, not against you. A value slightly outside a range can be entirely normal for you, and a value inside a range can be a problem given your family history. Context is the thing the report cannot supply.
Can I get most of this through my regular doctor? Usually, yes — if you ask specifically. Bring the named list rather than a general request for "a full workup". ApoB and Lp(a) in particular are cheap and standard; they are simply not habitual in routine care. Some will need you to explain why you want them, which is a five-minute conversation, not a barrier.
Is biological-age testing completely worthless? As research, no — it is one of the more interesting things happening in ageing biology. As a personal metric you track quarterly and optimise against, the measurement noise and the absence of any proven way to move it make the exercise premature. Revisit in a few years. The field is moving.
What if I can only afford one thing? Get your blood pressure measured properly and get it under control if it is high. It is nearly free, the evidence is overwhelming, and it is the intervention most likely to add years. The second thing would be an ApoB test. Neither will look impressive on a dashboard.