BlogLongevity Health Screening: A Doctor's 2026 Roadmap (with Taiwan Pricing)
May 24, 2026
Quick longevity roadmap: The single best predictor of healthspan after age 40 is cardiovascular calcification, measurable via a one-time Coronary Calcium Score. After that, the highest-leverage screens are ApoB (blood), Hemoglobin A1c, DEXA scan for body composition + bone density, and at 50+, a Coronary CT Angiogram. Most of what longevity influencers prescribe is downstream of these five baseline measurements. This guide maps decade-by-decade what to actually screen, why, and where to do it cost-effectively.
The longevity conversation in 2026 is louder than it has ever been — and significantly more confusing. Between Peter Attia's clinical framework, Bryan Johnson's quantified self-experiments, the Function Health subscription model, and Prenuvo's full-body MRI marketing, it is easy to spend $10,000 a year on testing and still not know what matters.
This article cuts through that noise. It is a practical, decade-by-decade screening roadmap built around the five biomarkers that actually predict outcomes — the ones that show up in every major longevity-medicine textbook and clinical trial database. Most of the "advanced" testing influencers recommend is either downstream of these five, or so early-stage that the clinical interpretation is speculative.
For each biomarker, we cover what it measures, why it predicts longevity, when to first test it, retest frequency, and where to get it cost-effectively (including Taiwan partner pricing where applicable).
The 5 Longevity Biomarkers That Actually Matter
1. ApoB (Apolipoprotein B) — Atherosclerosis Driver
What it measures: The number of atherogenic lipoprotein particles in your blood (each ApoB-containing particle carries one ApoB molecule). A more accurate predictor of cardiovascular event risk than LDL cholesterol alone.
Why it matters: Cardiovascular disease remains the #1 cause of death globally. ApoB is the closest single number we have to "atherosclerosis particle count." Lower is better, with target ranges of < 80 mg/dL for primary prevention and < 60 mg/dL for high-risk individuals.
First test: Age 25–30. Yes, that early. Atherosclerosis starts in your 20s. Knowing your baseline ApoB at 28 changes what you do for the next 50 years.
Frequency: Annual, or every 6 months if optimizing actively.
Cost: $30–$50 standalone in Taiwan; included in Advanced+ tier checkups. US self-pay $80–$200.
2. Hemoglobin A1c (HbA1c) — Glucose Metabolism
What it measures: Average blood glucose over the prior 2–3 months, reflected in the percentage of glycated hemoglobin in your red blood cells.
Why it matters: Type 2 diabetes accelerates virtually every age-related disease — cardiovascular, cognitive, kidney, retinal. HbA1c catches the slide from "normal" to "prediabetic" to "diabetic" before symptoms appear. Optimal range is 4.8%–5.4%; the "diabetic" threshold of 6.5% is far too late.
First test: Age 25–30, or any age if family history of T2D.
Frequency: Annual. Every 3–6 months if optimizing or in the 5.5–6.0% range.
Cost: $15–$25 in Taiwan; standard inclusion in all checkup tiers.
3. Coronary Calcium Score (CAC) — Decade's Single Most Predictive Test
What it measures: A low-dose CT scan quantifies calcified atherosclerotic plaque in your coronary arteries. Score of 0 = no detectable plaque; > 100 = moderate risk; > 400 = high risk.
Why it matters: A CAC score in your 40s is one of the strongest predictors of cardiac events in your 50s and 60s. A score of 0 at age 50 is associated with very low cardiac event rates for ~10 years; a score > 100 changes clinical management entirely. Insurance often won't cover this without symptoms — and that is the gap.
First test: Age 40, earlier if family history. Repeat every 5–10 years if score is 0; annually if score is > 100.
Cost: $250–$400 in Taiwan; included in Advanced and Premium checkup tiers. US self-pay $300–$800.
4. DEXA Body Composition + Bone Density
What it measures: A 7-minute X-ray scan quantifies your visceral fat (the dangerous kind), lean muscle mass, bone mineral density, and fat distribution.
Why it matters: Visceral fat is independently associated with cardiovascular, metabolic, and cancer mortality — a "normal BMI" person with high visceral fat has worse outcomes than an "overweight BMI" person with low visceral fat. Bone density predicts fracture risk in your 60s+, and fractures are a leading cause of disability in older adults. Lean mass is now understood as a longevity metric in its own right — sarcopenia (muscle loss) is a strong predictor of all-cause mortality.
First test: Age 30–35, or earlier if interested in body-composition optimization.
Frequency: Every 2 years (bone density), every 6–12 months (body composition during active training).
Cost: $150–$250 in Taiwan; included in Premium and Plus tiers. US self-pay $200–$450.
5. Coronary CT Angiogram (CCTA) — The 50+ Upgrade
What it measures: A contrast-enhanced CT scan visualizes the actual coronary arteries — calcified and non-calcified plaque, stenosis, vessel wall integrity. CAC tells you the calcium burden; CCTA tells you the full plaque picture.
Why it matters: CCTA detects non-calcified plaque (the kind more likely to rupture and cause heart attacks) that CAC misses. For patients 50+, or younger with CAC > 100, CCTA is the better imaging choice. It is the test that meaningfully changes statin / PCSK9 decisions.
First test: Age 50, or earlier if CAC > 100 or strong family history.
Cost: $799 in Taiwan; included in Premium and Plus tiers. US self-pay $1,500–$3,500.
Decade-by-Decade Roadmap
Your 20s — Establish the Baseline
Most people skip this decade entirely. That is the mistake.
- ApoB + HbA1c baseline (you want this number from age 25)
- Complete blood count, comprehensive metabolic panel
- Vitamin D, B12, ferritin (correctable deficiencies)
- Resting blood pressure (home cuff, not just doctor's office)
- ⏸ Imaging: Not yet needed unless symptomatic or strong family history
Taiwan tier match: Essentials ($799) covers everything needed at this stage.
Your 30s — Add Body Composition + Cardiovascular Imaging Prep
- All of 20s panel, annually
- DEXA scan (first time, age 30–35) for body composition + bone baseline
- ApoB optimization if first reading was suboptimal — diet, statin discussion if very high
- Sleep study consideration (untreated sleep apnea quietly accelerates everything)
- ⏸ Brain imaging: Not standard unless family history of early dementia / aneurysm
Taiwan tier match: Advanced ($1,499) adds the imaging layer.
Your 40s — The Decade That Matters Most
This is the decade where the highest-leverage interventions happen. What you do in your 40s sets the trajectory for your 60s.
- Coronary Calcium Score (first time, age 40). Single most predictive test you can do this decade.
- Annual ApoB with optimization protocol if > 80 mg/dL
- Full-Body MRI (one-time baseline, then every 3–5 years)
- Colonoscopy (age 45, or 10 years before earliest family case)
- Women: mammogram (age 40–45 start, frequency individualized)
- DEXA every 2 years
- Resistance training, prioritized over cardio. Sarcopenia prevention starts now.
Taiwan tier match: Premium ($2,299) or Plus ($3,099) — Plus is better value if planning a one-trip baseline.
Your 50s — Upgrade to CCTA + Add Brain Imaging
- Coronary CT Angiogram (replaces CAC as primary cardiac imaging)
- Brain MRA with contrast (first time) — aneurysm screening becomes higher-yield this decade
- Annual ApoB + lipid panel, with much lower target ranges (< 60 mg/dL for high-risk)
- Low-Dose Lung CT if smoking history or family history
- Cognitive baseline (NeuroQuant-style volumetric MRI)
- Bone density check every 1–2 years (women post-menopause)
Taiwan tier match: Plus Package ($3,099) — designed specifically for this profile.
Your 60s and Beyond — Maintenance + Functional Capacity
- Continue CCTA every 2–3 years
- Annual cognitive volumetric MRI
- DEXA every year (osteoporosis risk dominant)
- Functional capacity assessment (VO2 max, grip strength, sit-to-stand)
- Hearing + vision annually (under-screened, high-impact on cognition)
- Annual eGFR / kidney function (medication adjustment territory)
What Longevity Influencers Get Wrong
Three patterns to be skeptical of:
- Massive supplement stacks. Most supplements have weak evidence outside of correcting deficiencies (Vitamin D, B12, magnesium when low). The five biomarkers above pay back 10× the ROI of any supplement protocol.
- Constant weekly biomarker tracking. Most useful biomarkers move slowly (ApoB takes 6+ weeks to respond to diet; HbA1c by definition reflects a 90-day average). Quarterly testing is enough for almost everyone; annual is enough for most.
- Full-body MRI before establishing the basics. If you have not yet measured your ApoB, HbA1c, blood pressure, and calcium score, those should come before a $2,500 full-body MRI. The MRI is high-value as one component of a comprehensive baseline, not as a standalone first step.
The Most Common Longevity Mistakes (Patient-Side)
- Starting too late — peak ROI for these tests is in your 30s and 40s, not 50s and 60s.
- Treating biomarkers as scoreboards rather than action triggers — a high ApoB result is only valuable if you actually intervene.
- Optimizing one metric at the expense of others — driving glucose into the 70s with severe carb restriction while neglecting muscle mass, for example.
- Spending on advanced imaging before doing affordable blood biomarkers.
- Ignoring sleep — no biomarker stays optimized with chronic sleep deprivation.
How Taiwan Fits Into Your Longevity Plan
For US patients optimizing for longevity, Taiwan is most valuable as a one-trip baseline center at 40 and again at 50:
- Age 40 trip: Plus Package + Essentials blood panel = $3,099 + $799 = full Decade That Matters baseline.
- Age 50 trip: Repeat Plus Package — track 10-year changes in all imaging modalities at the price of a single US Coronary CT Angiogram.
- Annual biomarker monitoring: Stay in the US with quarterly blood draws.
This split — annual blood biomarkers locally, every-decade imaging baselines in Taiwan — is the most cost-effective way to execute a serious longevity-screening protocol without spending $20,000/year.
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Sources & Further Reading
FAQ
Five biomarkers form the high-leverage baseline: (1) ApoB — atherogenic particle count, best single cardiovascular risk predictor; (2) Hemoglobin A1c — glucose metabolism over 90 days; (3) Coronary Calcium Score — single most predictive test in your 40s; (4) DEXA scan — body composition + bone density; (5) Coronary CT Angiogram — upgrade from CAC at age 50+. These five are downstream-of-evidence; most supplement protocols and "advanced" tests are speculative compared to optimizing these.
Age 25–30 for blood biomarkers (ApoB, HbA1c, lipids). Age 30–35 for first DEXA. Age 40 for Coronary Calcium Score. Age 50 for Coronary CT Angiogram and Brain MRA. Most people start a decade too late. The highest-ROI decade is your 40s — what you measure and act on then sets the trajectory for your 60s.
Coronary Calcium Score (CAC) is a low-dose CT without contrast that quantifies calcified plaque only — fast, cheap, and the best one-number cardiovascular risk indicator in your 40s. Coronary CT Angiogram (CCTA) is a contrast-enhanced CT that visualizes the full coronary anatomy including non-calcified plaque, stenosis, and vessel wall integrity — significantly more diagnostic and the better choice at age 50+. Most patients start with CAC in their 40s and upgrade to CCTA in their 50s.
They are not equivalent. Function Health ($499/year) is 110+ blood biomarkers — useful for monitoring and habit reinforcement, but does not include any imaging. Prenuvo ($1,495–$2,499) is full-body MRI — strong on cancer and structural findings, weak on cardiovascular (no Coronary CT) and vascular (no MRA). A serious longevity protocol uses both modalities: annual blood markers (Function or local) plus every-decade imaging (Taiwan partner clinics deliver Prenuvo-equivalent imaging at one-third the cost).
Blood biomarkers (ApoB, HbA1c, lipids) — annually for most people, quarterly if actively optimizing. DEXA scan — every 2 years for body composition tracking, more often if training-focused. Coronary Calcium Score — every 5–10 years if score is 0, annually if > 100. Coronary CT Angiogram — every 2–3 years after age 50. Full-Body MRI — every 3–5 years as a structural baseline. Weekly biomarker tracking is mostly performative; most useful markers move on a 6–12 week timescale.
The split protocol most patients converge on: annual blood biomarkers in the US (or Function Health subscription), with every-decade comprehensive imaging baseline in Taiwan. A Plus Package in Taiwan at age 40 and again at age 50 — combined with annual US-based biomarker tracking — delivers a serious longevity protocol for under $10,000 across 20 years. The US-only equivalent would run $40,000+.
Yes — DEXA scans are widely available at Taipei tertiary hospitals and New Dawn Health partner clinics. Standalone DEXA runs USD $150–$250 (vs $200–$450 in the US), or included as part of the Premium and Plus screening tiers. DEXA captures three high-value metrics simultaneously: visceral fat percentage, lean muscle mass, and bone mineral density. For longevity-focused patients tracking body composition, twice-yearly DEXA in Taiwan is significantly more affordable than the US.
