Best Longevity Clinics: Where to Get Comprehensive Health Optimization Testing

A New Category of Healthcare

The traditional annual physical is designed to detect disease that has already developed. A longevity clinic takes the opposite approach: using comprehensive testing to identify risk factors and early pathology years to decades before they become symptomatic disease.

This field has exploded in the last 5 years. From comprehensive blood panels to whole-body MRI, DEXA scans, coronary artery calcium scoring, and genetic analysis, a new tier of healthcare has emerged for people who want to be proactive rather than reactive about their health.

Here is the landscape, from accessible and affordable to comprehensive and expensive.

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Tier 1: Comprehensive Blood Testing (Accessible, High Value)

Function Health: $499/year

The most impactful affordable longevity health investment available.

Function Health tests 160+ biomarkers across cardiovascular, metabolic, hormonal, inflammatory, nutritional, and organ function categories: including the advanced markers most standard panels miss: ApoB, Lp(a), fasting insulin, hs-CRP, homocysteine, DHEA-S, and more.

What you get:

• 160+ biomarkers via standard blood draw (at-home kit or local lab)
• Physician review of results
• Trend tracking over time
• Referral recommendations for abnormal findings

Best for: Anyone who wants comprehensive biomarker data without a full longevity clinic experience. The single best value in proactive health monitoring.

Co-founded by: Dr. Mark Hyman (Head of Strategy at Cleveland Clinic Center for Functional Medicine)

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InsideTracker: $299–599 (one-time)

A sports science-oriented blood testing and lifestyle optimisation platform. Tests 43 biomarkers with personalised recommendations based on your results and stated goals (performance, longevity, weight, energy).

Standout feature: Biological age calculation and optimisation tracking over time. Clear dashboard that non-physicians can interpret easily.

Best for: Athletes and performance-focused individuals who want actionable nutrition and training recommendations alongside their blood data.

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Marek Health: $149–500/month

Physician-supervised hormonal optimisation clinic: particularly strong for testosterone replacement therapy (TRT), thyroid, and metabolic health.

What makes it different: Direct access to physicians specialising in hormonal health. More aggressive optimisation targets than most conventional physicians.

Best for: Men with low testosterone or hormonal concerns who want physician-supervised optimisation, not just testing.

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Tier 2: Advanced Imaging (High Impact, Medium Cost)

Prenuvo: Full Body MRI ($2,500)

Full-body MRI scan (no radiation) that screens for cancer, aneurysms, cysts, organ abnormalities, and other structural pathology across 500+ conditions. Most of which are entirely silent until advanced.

Coverage: Brain, spine, chest, abdomen, pelvis, essentially the whole body in a 60-minute scan.

Why it matters: Many of the most lethal cancers (pancreatic, ovarian, glioblastoma) have no symptoms until advanced stage. Early detection dramatically improves outcomes. One Prenuvo scan has genuinely changed lives, and saved them.

Limitation: MRI detects structural abnormalities but cannot assess functional health (metabolic, cardiovascular risk, biological age). It is a complement to blood testing, not a replacement.

Best for: Anyone over 40, strong family history of cancer or aneurysm, or anyone who wants the best early cancer detection available.

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Coronary Artery Calcium (CAC) Score: $75–200

A CT scan measuring calcium deposits in coronary arteries: an extremely accurate predictor of cardiovascular event risk that outperforms standard lipid panels for absolute risk prediction.

Scoring:

• 0: Virtually no plaque, lowest cardiovascular risk
• 1–99: Mild plaque, moderate risk, lifestyle focus
• 100–399: Moderate plaque, medication consideration
• 400+: Extensive plaque, aggressive management needed

Best for: Anyone over 40 without established cardiovascular disease, particularly those with borderline lipid panels or family history of heart disease. A CAC score of 0 is the most reassuring cardiovascular finding possible; a high score identifies risk that demands aggressive intervention.

Availability: Most major hospitals and imaging centres. Requires physician referral in some states.

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DEXA Scan: $50–150

Dual-energy X-ray absorptiometry: measures bone density (osteoporosis risk) and body composition (lean mass vs fat mass, regional fat distribution).

Key metrics:

• Bone mineral density (T-score and Z-score)
• Total body fat percentage
• Lean muscle mass by region
• Visceral fat estimation

Visceral fat (fat around organs) is more metabolically harmful than subcutaneous fat and predicts metabolic disease independently. DEXA is the most accurate non-invasive visceral fat measure available.

Best for: Women over 50 (osteoporosis screening), athletes tracking body composition, anyone wanting accurate baseline body composition data.

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Tier 3: Comprehensive Longevity Clinics (Premium, Full Service)

Fountain Life: $25,000–50,000+/year

The most comprehensive longevity clinic experience available in the US. Founded by Peter Diamandis and co-founded with experts from Duke, Mayo Clinic, and Cleveland Clinic.

What a full assessment includes:

• Full-body MRI (Ezra/Prenuvo equivalent)
• Coronary artery calcium scoring
• 150+ blood biomarkers
• Genetic analysis (whole genome sequencing)
• Brain health assessment
• Microbiome analysis
• DEXA scan
• VO₂ max testing
• Physician interpretation and personalised protocol
• Quarterly follow-up and monitoring

Locations: New York, Nashville, Dallas, Orlando, and expanding

Best for: High-net-worth individuals who want the most comprehensive baseline health picture available and ongoing medical partnership. The cost is significant, and the assessment is broader than the other clinics on this page offer.

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Human Longevity Inc. (HLI): $25,000+

Founded by genomics pioneer Craig Venter. Focus on genomic data integration with phenotypic health data.

Distinctive feature: Whole genome sequencing interpreted by genomics experts: identifies cancer predisposition genes, pharmacogenomics (how your genetics affects drug metabolism), and ancestry health risks.

Best for: Those with strong family history of genetic conditions or wanting the deepest possible genetic health analysis.

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Cleveland Clinic Executive Health: $3,000–6,000

The most clinically rigorous major health system executive physical. Includes comprehensive blood panel, cardiac stress testing, pulmonary function, comprehensive physician examination, and specialist consultations as needed.

Best for: Those who want comprehensive health assessment within a top-tier academic medical centre: less focused on longevity optimisation, more focused on thorough disease screening.

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What Order to Do It In

If you are starting your longevity health journey:

1. Year 1: Function Health ($499), comprehensive blood biomarkers. Know your numbers.
2. Year 1–2: CAC Score ($150), cardiovascular baseline that takes 10 minutes
3. Year 2–3: DEXA scan ($100), body composition and bone density baseline
4. Year 3+: Prenuvo ($2,500), full body MRI if budget allows
5. Ongoing: Annual Function Health retesting, biannual CAC if initially elevated

This sequence gives you the highest-impact data for the least cost, building toward comprehensive imaging as budget and priorities allow.

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Red Flags to Avoid

• Clinics that lead with supplements: Testing should lead to personalised lifestyle and medical recommendations, not to proprietary supplement sales
• Unvalidated biological age tests: Some clinics charge thousands for “biological age” assessments using methods not yet clinically validated
• No physician involvement: Testing without physician interpretation misses the clinical context needed to act appropriately on findings
• Outcome guarantees: No clinic can guarantee outcomes. Be sceptical of specific longevity claims (“extend your life by X years”)