The Complete Longevity Lab Testing Guide: What to Test, When, and What the Numbers Mean
Annual bloodwork from a primary care physician typically includes a basic metabolic panel, CBC, and standard lipid panel — tests designed to identify established disease, not to optimize for longevity. This guide presents the complete longevity-optimized testing panel: every biomarker worth tracking, the optimal targets (not just normal ranges), how often to test, and what to do when numbers are suboptimal.
- Standard annual bloodwork ordered by primary care physicians is calibrated to detect established disease — not to optimize for longevity. Normal lab reference ranges reflect population averages in an often metabolically compromised population, not optimal targets for a person seeking to maximize healthspan.
- The minimum viable longevity bloodwork panel adds eight biomarkers to the standard panel that provide dramatically more metabolic, cardiovascular, and inflammation information: ApoB, Lp(a), fasting insulin, HOMA-IR, hsCRP, homocysteine, omega-3 index, and 25-OH vitamin D. These tests are available at standard commercial labs for under $200 combined.
- The expanded longevity panel — appropriate for annual or semi-annual testing in health-optimizing adults — includes advanced lipid markers (ApoB, Lp(a), NMR lipoprotein particle size), metabolic markers (fasting insulin, HOMA-IR, uric acid, HbA1c), inflammatory markers (hsCRP, IL-6, fibrinogen), hormonal markers (testosterone, SHBG, free T, TSH, free T4, DHEA-S, IGF-1), and nutritional markers (25-OH vitamin D, magnesium RBC, B12, omega-3 index, homocysteine).
- Epigenetic age testing (TruDiagnostic or equivalent) provides DunedinPACE and GrimAge — the most sensitive available biological age biomarkers for detecting intervention effects. Annual testing is appropriate; semi-annual testing makes sense if actively tracking a specific protocol's effect.
- The most commonly abnormal biomarkers in longevity-oriented adults who consider themselves healthy: ApoB above 80 mg/dL (extremely common), fasting insulin above 7 uIU/mL (very common), 25-OH vitamin D below 40 ng/mL (very common), omega-3 index below 8 percent (very common), and homocysteine above 9 micromol/L (common). These are the highest-yield additions to standard annual bloodwork.
The gap between what standard medical care measures and what longevity-optimized care requires is substantial. A typical annual physical with standard bloodwork orders: CBC, CMP (comprehensive metabolic panel), standard lipid panel (total cholesterol, LDL-C, HDL-C, triglycerides), TSH, and perhaps HbA1c. This panel is designed to detect established disease — anemia, kidney disease, diabetes, thyroid disease, and hyperlipidemia by standard definitions. It was not designed to optimize for longevity or to detect the early upstream dysfunction that precedes disease by 10 to 20 years.1
This guide presents the longevity-optimized testing framework: organized by category, with longevity-optimized target ranges alongside standard reference ranges, testing frequency recommendations, and the clinical significance of each marker.
The Minimum Viable Longevity Panel: Eight Key Additions
The eight biomarkers below are not included in standard annual bloodwork but are available at commercial labs (Quest, LabCorp, or self-order services like Ulta Lab Tests) for under $200 combined. They represent the highest-yield additions to standard care for longevity-oriented adults:
| Biomarker | Standard Range | Longevity Target | What It Detects |
|---|---|---|---|
| ApoB | <100 mg/dL | <70 mg/dL | Total atherogenic particle count — superior to LDL-C |
| Lp(a) | <50 mg/dL | Test once; <30 mg/dL ideal | Genetic cardiovascular risk factor; affects 20% of population |
| Fasting insulin | <25 uIU/mL | <5-7 uIU/mL | Early insulin resistance — abnormal 10-20 years before glucose |
| HOMA-IR | <2.5 | <1.0 | Composite insulin resistance score |
| hsCRP | <3.0 mg/dL | <1.0 mg/dL | Systemic inflammatory burden / cardiovascular risk |
| Homocysteine | <15 umol/L | <9 umol/L | B vitamin status; CV and cognitive risk |
| Omega-3 index | No standard | >8% | Long-chain omega-3 status; cardiovascular and brain protection |
| 25-OH Vitamin D | 20-50 ng/mL | 40-60 ng/mL | Bone, immune, muscle function; cancer risk |
The Expanded Longevity Panel: Annual Deep Dive
Cardiovascular and Lipid Markers
Beyond ApoB and Lp(a): NMR lipoprotein particle size and number (from LabCorp or Quest) provides a complete picture of lipoprotein particle count, size distribution, and VLDL subfractions. Apolipoprotein A1 (ApoA1) — the functional protein of HDL particles; ApoB:ApoA1 ratio is a superior risk predictor to total cholesterol:HDL ratio. Uric acid — elevated in insulin resistance and independently associated with cardiovascular risk, hypertension, and kidney disease.2
Metabolic Markers
HbA1c (3-month glucose average) combined with fasting insulin provides a complete metabolic picture. Fasting glucose (optimal: 70-85 mg/dL). GGT (gamma-glutamyltransferase) — a liver enzyme sensitive to alcohol consumption and metabolic liver disease; a valuable addition for detecting early hepatic stress.3
Hormonal Markers
For men: total testosterone, free testosterone (calculated or equilibrium dialysis), SHBG, LH, FSH, estradiol. For women: FSH, estradiol, progesterone (timed to cycle), SHBG, testosterone. For all: TSH, free T4 (and free T3 in symptomatic individuals), DHEA-S, IGF-1, cortisol (morning, fasting).4
Inflammatory Markers
hsCRP (high-sensitivity — not the standard CRP used for acute infection detection). Fibrinogen — both a clotting factor and acute phase protein; elevated fibrinogen independently predicts cardiovascular events. IL-6 (where available) — the most direct available measure of the SASP-driven inflammatory component of inflammaging.
Biological Age Testing
Epigenetic age testing (TruDiagnostic's TruAge Complete or equivalent) provides: Horvath, PhenoAge, GrimAge, and DunedinPACE — the complete biological age picture. Annual testing is appropriate as a longevity biomarker baseline. The DunedinPACE result is the most sensitive to intervention effects — if actively testing a protocol's effect, semi-annual testing may be warranted. Cost: approximately $300 to $400 at TruDiagnostic.5
Testing Frequency Guide
| Biomarker Category | Testing Frequency | Notes |
|---|---|---|
| Standard metabolic panel + CBC | Annually | Standard of care baseline |
| ApoB, fasting insulin, hsCRP, homocysteine | Annually | Longevity minimum viable panel |
| Lp(a) | Once (if normal) | Genetically determined; retesting adds little value |
| 25-OH Vitamin D, omega-3 index | Annually (or 3 months after changing supplementation) | Track response to supplementation changes |
| Hormonal panel | Annually | More frequent if on HRT or TRT |
| DEXA (body composition + bone density) | Annually or biannually | More frequent if actively changing body composition |
| Epigenetic age (DunedinPACE + GrimAge) | Annually | Semi-annually if tracking specific protocol |
| VO2 max (treadmill or lab test) | Annually | Track cardiorespiratory fitness trajectory |
References
- 1Sniderman AD, et al. "Why is precision medicine considered the future of medicine?" NPJ Precision Oncology. 2018;2(1):1. [PubMed]
- 2Cromwell WC, et al. "LDL particle number and risk of future cardiovascular disease." Journal of Clinical Lipidology. 2007;1(6):583-592. [PubMed]
- 3Perry IJ, et al. "Prospective study of risk factors for development of non-insulin dependent diabetes in middle aged British men." BMJ. 1995;310(6979):560-564. [PubMed]
- 4Bhasin S, et al. "Testosterone therapy in men with hypogonadism." JCEM. 2018;103(5):1715-1744. [PubMed]
- 5Lu AT, et al. "DNA methylation GrimAge strongly predicts lifespan and healthspan." Aging (Albany NY). 2019;11(2):303-327. [PubMed]