TeloYears

Short answer: there’s no single “best” for everyone — pick by what you want to track (metabolic control, blood biomarkers, microbiome, coaching, budget). My top picks and when to choose each: InsideTracker — best overall longevity lab membership Why: focused on longevity/recovery biomarkers (ApoB, hs‑CRP, fasting glucose/insulin, vitamin D, IGF‑1, CBC, liver/kidney, sex hormones, etc.), gives personalized interventions (diet/supplement/exercise), easy re-testing schedule and coaching options. Good if you want a science‑driven, comprehensive program and repeat monitoring. Levels Health — best if your main goal is metabolic longevity / glucose control Why: uses continuous glucose monitoring (CGM) plus lab tests and coaching to optimize metabolic flexibility (key for aging risk). Great for people who want day‑to‑day actionable feedback on meals, exercise, sleep and metabolic markers. ZOE — best for personalized nutrition tied to metabolism + microbiome Why: combines CGM, gut microbiome sequencing and blood markers to give dietary guidance that reduces glycemic/insulin stress — useful when nutrition is your primary longevity lever. Viome — best if you want deep microbiome and functional-metabolomics insights Why: gut microbiome and metabolite profiling with ongoing subscription and personalized supplement recommendations. Useful if you suspect gut-driven inflammation or want microbiome‑based interventions. Quest Diagnostics / Labcorp (through your doctor or third‑party services like DirectLabs, HealthLabs) — best low‑cost, clinician‑grade repeat testing Why: most complete access to advanced clinical markers (Lp(a), ApoB, LDL‑P, homocysteine, omega‑3 index, vitamin panels, hormone panels). Cheaper per test and easier to use with your physician for interpretation and treatment decisions. Other useful specialty tests/memberships: SpectraCell (micronutrient testing) if you care about cellular nutrient status. TeloYears / RepeatDx telomere tests — available but interpret with caution (limited actionability). Things to consider when choosing Which biomarkers matter to you (lipids/ApoB/LDL‑P, hs‑CRP, HbA1c, fasting insulin, IGF‑1, Vitamin D, omega‑3, sex hormones, etc.) Sample type: in‑lab phlebotomy vs at‑home fingerstick vs CGM Coaching vs raw results Budget and re‑test frequency Want clinically actionable results (use Quest/Labcorp + physician) vs optimized lifestyle guidance (InsideTracker/Levels/ZOE) If you tell me your priorities (budget, whether you want CGM, which biomarkers are most important, at‑home vs lab draw), I’ll recommend 1–2 best specific memberships for your situation and a sample test list to track.

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Short answer: for predicting and improving healthy lifespan, focus first on cardiometabolic, inflammatory, kidney/liver, and metabolic-aging biomarkers — because they are the strongest, actionable predictors of morbidity and mortality. Below I list the highest-priority blood tests, why they matter, and where you can get them. High‑priority biomarkers (what to test and why) Lipids / atherosclerosis risk LDL‑C, non‑HDL, triglycerides — routine measures of heart disease risk. ApoB and/or LDL‑particle number (LDL‑P) — better measures of atherogenic particle burden than LDL‑C alone. Lipoprotein(a) [Lp(a)] — largely genetic, major independent risk factor; crucial to know if high. Where to get them: request a lipid panel + ApoB and Lp(a) from LabCorp or Quest; NMR lipoprofile (LDL‑P) is available via LabCorp (Vantera NMR) or specialty services such as Nightingale or some cardiometabolic clinics. Glucose metabolism and insulin resistance HbA1c, fasting glucose, fasting insulin (or HOMA‑IR) — predict diabetes and cardiovascular risk. Keeping HbA1c in the low-normal range is associated with longer healthspan. Where: standard panel at Quest or LabCorp; fasting insulin sometimes needs special order. Inflammation High‑sensitivity CRP (hs‑CRP) — simple inflammatory predictor of cardiovascular and overall mortality. Interleukin‑6 (IL‑6) and GlycA (if available) — stronger predictors in research settings, but less commonly ordered. Where: hs‑CRP available at Quest/LabCorp; GlycA via Nightingale; IL‑6 via specialty labs or research panels. Kidney and liver health Creatinine/eGFR and cystatin C (if available) — kidney function is strongly tied to outcomes. ALT/AST and GGT — liver health and metabolic dysfunction markers. Where: routine metabolic/comprehensive metabolic panel at Quest or LabCorp; cystatin C by special request. Hematology and general health CBC (hemoglobin, hematocrit, WBC) and albumin — anemia, immune status and low albumin are risk markers. Where: CBC and CMP at LabCorp/Quest. Hormones (age/gender dependent) Testosterone (total and free) in men; estradiol in women; DHEA-S; TSH/free T4 (thyroid). Why: low or imbalanced sex hormones and thyroid dysfunction affect muscle, bone, cognition and survival. Where: standard hormone panels at major labs; may need time-of-day ordering for testosterone. Micronutrients & metabolic risk modifiers 25‑OH vitamin D, vitamin B12, folate, and homocysteine — deficiencies or high homocysteine are linked to adverse outcomes. Where: Quest/LabCorp; micronutrient panels via SpectraCell (specialty micronutrient testing) or Direct­-to‑consumer kits. Advanced / research markers (optional) Epigenetic “biological age” (DNA methylation clocks) — gives an estimate of biological age and response to interventions. Where: TruDiagnostic is a leading commercial provider; Elysium offered related products; these are research‑focused but increasingly practical. Telomere length — widely available but limited predictive value compared with methylation clocks. Providers: TeloYears (older product), other specialty labs. NMR metabolomics (detailed lipoprotein subfractions, GlycA) — Nightingale Health and LabCorp NMR services provide high‑resolution risk info. Where to get tests and interpretation (brands/services to consider) LabCorp and Quest Diagnostics — large national labs. Reliable, accept physician orders; good for comprehensive metabolic panel, lipid panel, HbA1c, hs‑CRP, thyroid, hormones, Lp(a), and specialty tests like cystatin C or NMR lipoprofile. InsideTracker and WellnessFX — consumer-facing services that combine lab testing with personalized interpretation and lifestyle recommendations. Good if you want actionable guidance rather than raw numbers. Everlywell and LetsGetChecked — convenient at‑home kits for common tests (lipids, HbA1c, vitamin D, hormones). Useful for convenience but may not offer all specialty tests. TruDiagnostic — leading commercial epigenetic clock testing if you want DNA methylation biological‑age measures. Nightingale Health / LabCorp NMR (Vantera) — for advanced lipoprotein and metabolomics (GlycA and LDL‑P). SpectraCell — specialty micronutrient testing and intracellular nutrient panels (useful for complex deficiency workups). How to prioritize and act If you can only do a few tests: get a basic metabolic panel (CMP), lipid panel + ApoB or LDL‑P, HbA1c, hs‑CRP, CBC, and 25‑OH vitamin D. Add Lp(a) once. Frequency: every 6–12 months for stable patients; more often if you’re making big lifestyle, medication, or supplement changes. Interpret results with a clinician — many markers are actionable (statins for high ApoB/LDL‑P, PCSK9 or niacin consideration for very high Lp(a) in context, lifestyle/medication for glucose control, vitamin D/B12 repletion, etc.). Don’t chase single numbers only — trends over time and multimarker risk (lipids + inflammation + glucose + kidney function) are what predict longevity. Caveats Some tests (epigenetic age, telomere length, certain cytokines) are still research‑oriented and not yet proven to be clinical game‑changers. Use them to inform, not dictate, care. Genetic testing (APOE, LPA genetics) can add context but requires counseling for interpretation. If you want, tell me: your age, sex, major health conditions, and whether you want at‑home vs physician‑ordered testing — I’ll give a tailored, prioritized test panel and recommended providers.

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