What Is Longevity

Testing and Diagnostics

The labs and screenings that drive a longevity protocol: biological age testing, advanced lipid and metabolic panels, micronutrient analysis, full-body MRI, continuous glucose monitoring, and more. What each measures and how to read it.

Featured Library in Testing and Diagnostics

ArticleJan 23, 2026

How Old Is Your Body, Really? Epigenetics Offers Answers

Your cells might be aging faster than your calendar. New epigenetic tests decode DNA methylation patterns across 900,000+ markers to reveal your true biological age—even pinpointing which organs age fastest.

PresentationJul 29, 2026

Epigenetic Age Testing: Your True Biological Clock

Discover how epigenetic testing reveals your true biological age versus chronological age with Ryan Smith, founder of TruDiagnostic. Learn how DNA methylation patterns can predict health outcomes with 92% accuracy and track the effectiveness of longevity interventions in real-time. Smith reveals how aging is the #1 risk factor for chronic disease—10x more significant than smoking or obesity—and demonstrates how epigenetic clocks can measure biological aging from a single drop of blood, providing over 100 biomarkers to optimize your health span.

ArticleJan 23, 2026

Telomere Length: The Cellular Clock You Can Actually Influence

Scientists have discovered how to rebuild your cells' protective caps—telomeres—that shorten with age. New research shows telomerase activation can reduce inflammation by 62% and measurably reverse cellular aging markers.

ArticleFeb 4, 2026

Methylation: The Master Switch Most People Never Test

Methylation controls over one billion cellular reactions per second, affecting everything from energy to mood to aging. Understanding your unique methylation genetics could be the missing piece in your optimization journey.

PresentationJul 29, 2026

Rewriting Your DNA: The Epigenetics of Longevity

Dr. Melissa Petersen, founder of the Human Longevity Institute, demystifies epigenetics and reveals how your DNA is not your destiny—it's your potential. Through personal storytelling and accessible science, she explains methylation, biological age testing, and the concept of the longevity escape velocity. Discover how the quality of inputs—from thoughts to foods to relationships—directly communicates with your DNA, either repressing or expressing your innate potential. With her biological age at 42 despite being chronologically 52, Dr. Petersen demonstrates that aging is optional, not inevitable.

ArticleFeb 11, 2026

Bone Density: The Longevity Metric Most People Ignore Until It's Too Late

Bone density declines silently for decades before a fracture ever occurs. Radiation-free REMS technology offers a precise, accessible way to measure both bone density and microarchitecture, turning skeletal health from something abstract into something you can actively manage.

Topics in Testing and Diagnostics

Advanced Lipid Panel

An advanced lipid panel measures particle size, number, and subfractions of cholesterol, offering a more detailed view of cardiovascular risk than standard tests.

AI-Driven Diagnostics

AI-driven diagnostics use machine learning to analyze medical images, biomarkers, and health data for earlier disease detection and personalized risk assessment.

Air Quality Testing (Indoor)

Indoor air quality testing identifies pollutants like VOCs, mold spores, particulate matter, and CO2 in your living space, with guidance on what to measure and how to interpret results.

ApoB Testing

ApoB testing measures the number of atherogenic lipoprotein particles in your blood, offering a more precise cardiovascular risk assessment than standard cholesterol panels.

Autonomic Nervous System Testing

Autonomic nervous system testing evaluates how your body regulates heart rate, blood pressure, and sweating to detect hidden dysfunction before symptoms escalate.

Biological Age Testing

Biological age testing estimates how fast your body is aging using molecular markers like DNA methylation, telomere length, and metabolic biomarkers.

Cognitive Testing

Cognitive testing measures memory, processing speed, attention, and executive function to track brain health over time and detect early decline.

Comprehensive Metabolic Panel

A comprehensive metabolic panel measures 14 blood markers covering kidney function, liver health, electrolytes, and blood sugar to assess metabolic status.

Continuous Glucose Monitor

A continuous glucose monitor (CGM) tracks blood sugar in real time via a small sensor under the skin, revealing how food, exercise, and stress affect metabolism.

Coronary Artery Calcium (CAC) Score

The coronary artery calcium score quantifies calcified plaque in heart arteries using a CT scan, offering a direct measure of atherosclerotic disease burden.

Coronary Calcium Score

A coronary calcium score uses a CT scan to measure calcified plaque in coronary arteries, providing a direct indicator of atherosclerotic disease and cardiac risk.

Cortisol Testing

Cortisol testing measures your primary stress hormone through blood, saliva, or urine to assess adrenal function and HPA axis health.

DEXA Scan

DEXA scan uses dual-energy X-ray absorptiometry to measure bone density, body fat, and lean mass with clinical precision, helping track structural health over time.

Digital Twins (Health Modeling)

Digital twins are virtual replicas of your biology used to simulate interventions and predict health outcomes. Here is how the technology works and where it stands.

DUTCH Test

The DUTCH test maps hormone levels and their metabolites through dried urine, revealing how your body produces, processes, and clears cortisol, estrogens, and androgens.

Epigenetic Clock Testing

Epigenetic clock testing reads DNA methylation patterns to estimate biological age, offering a molecular snapshot of how fast your body is aging.

Fasting Insulin Testing

Fasting insulin testing measures baseline insulin levels to detect insulin resistance years before blood sugar rises, guiding early metabolic intervention.

Food Sensitivity Testing

Food sensitivity testing measures immune reactions to specific foods, but the science behind different methods varies widely. Here is what the evidence actually supports.

Full-Body MRI Screening

Full-body MRI screening uses magnetic resonance imaging to scan organs, tissues, and structures for early signs of disease without radiation exposure.

Galleri Test

The Galleri test screens for over 50 cancer types from a single blood draw by detecting cell-free DNA methylation patterns, with details on accuracy, prep, and results.

Genetic Testing (SNP Analysis)

Genetic testing through SNP analysis reads single-letter DNA variations that shape disease risk, nutrient metabolism, and drug response. Here is how it works.

GI-MAP Test

The GI-MAP test uses quantitative PCR to detect gut pathogens, parasites, and microbiome imbalances from a single stool sample. Here is what it measures and what results mean.

GlycanAge Testing

GlycanAge testing measures immunoglobulin G glycosylation patterns to estimate biological age, reflecting immune system status and chronic inflammation levels.

Grail Cancer Screening

Grail cancer screening uses cell-free DNA methylation patterns in blood to detect over 50 cancer types, often before symptoms appear.

Heart Rate Variability

Heart rate variability measures the time between heartbeats, reflecting autonomic nervous system balance and serving as a biomarker for stress, recovery, and biological age.

Heavy Metal Testing

Heavy metal testing measures toxic metals like lead, mercury, arsenic, and cadmium in blood, urine, or hair to assess body burden and guide detoxification decisions.

HOMA-IR (Insulin Resistance Index)

HOMA-IR uses fasting glucose and insulin levels to estimate insulin resistance, a key driver of metabolic disease and accelerated aging.

Homocysteine Testing

Homocysteine testing measures an amino acid linked to cardiovascular risk, B vitamin status, and methylation function. Learn what levels mean and when to test.

hsCRP (High-Sensitivity C-Reactive Protein)

hsCRP measures low-grade systemic inflammation linked to cardiovascular disease and aging. Learn what your results mean, how to prepare, and how often to test.

Liquid Biopsy

Liquid biopsy detects cancer signals from a simple blood draw by analyzing circulating tumor DNA, proteins, and cells, offering a non-invasive screening alternative.

Lp(a) Testing

Lp(a) testing measures a genetically determined lipoprotein linked to cardiovascular disease risk, with guidance on results, preparation, and testing frequency.

Micronutrient Testing

Micronutrient testing measures vitamin, mineral, and antioxidant levels in blood or cells to identify deficiencies that standard panels miss.

Mold Inspection (ERMI / HERTSMI-2)

Mold inspection using ERMI and HERTSMI-2 scoring identifies indoor fungal contamination by DNA analysis of dust samples, guiding remediation for health.

Mycotoxin Testing

Mycotoxin testing detects fungal toxins in urine or blood that may drive chronic inflammation, fatigue, and neurological symptoms. Learn what it measures and how to interpret results.

Omega-3 Index

The Omega-3 Index measures EPA and DHA levels in red blood cell membranes, reflecting long-term fatty acid status linked to cardiovascular and brain health.

Organ-on-a-Chip

Organ-on-a-chip technology replicates human organ functions on microfluidic devices, enabling drug testing and disease modeling without traditional animal studies.

Organic Acids Test

The organic acids test measures dozens of metabolic byproducts in urine, revealing mitochondrial function, nutrient status, detox capacity, and microbial balance.

Sex Hormone Panel

A sex hormone panel measures testosterone, estrogen, progesterone, and related markers to assess reproductive and metabolic health across the lifespan.

Sleep Study (Polysomnography)

A sleep study, or polysomnography, records brain waves, breathing, and movement during sleep to diagnose disorders that erode health and accelerate aging.

Telomere Length Testing

Telomere length testing measures the protective caps on chromosomes that shorten with age, offering one window into biological aging and cellular health.

Thyroid Panel (Full)

A full thyroid panel tests TSH, free T3, free T4, reverse T3, and thyroid antibodies to reveal how well the thyroid gland regulates metabolism and energy.

Toxic Load Assessment

Toxic load assessment measures accumulated environmental chemicals in blood, urine, or hair to guide detoxification and reduce long-term health risks.

Toxin Panels (Great Plains / Vibrant)

Toxin panels from Great Plains and Vibrant measure environmental chemicals in urine, including pesticides, phthalates, and volatile solvents, to assess toxic burden.

Vitamin D Level Testing

Vitamin D level testing measures 25-hydroxyvitamin D in blood to assess deficiency, sufficiency, and toxicity, with guidance on preparation, results, and frequency.

VO2 Max Testing

VO2 max testing measures peak oxygen uptake during exercise, providing a direct metric of cardiorespiratory fitness linked to longevity and all-cause mortality risk.

Water Quality Testing

Water quality testing identifies contaminants in drinking water that affect health, from heavy metals and PFAS to microbial pathogens and disinfection byproducts.

Whole Genome Sequencing

Whole genome sequencing reads all 3 billion base pairs of your DNA, revealing disease risk, drug response, and ancestry with unmatched genetic detail.

Whole-Body MRI (Prenuvo / Ezra)

Whole-body MRI scans the entire body for early signs of cancer, aneurysms, and organ abnormalities without radiation, using services like Prenuvo and Ezra.

ZRT Hormone Testing

ZRT hormone testing uses saliva, dried blood spot, and dried urine to measure hormone levels at home, offering a practical window into endocrine function.

Latest News in Testing and Diagnostics

LT WireAug 3, 2026

Whole-body MRI screening detects early cancers, aneurysms

EHE Health and Prenuvo have partnered to offer discounted whole-body MRI screening to select members, making radiation-free organ surveillance more accessible across 200+ U.S. clinics. The screening detects structural abnormalities, early-stage malignancies, and organ disease before symptom onset in under one hour.

Longevity.TechnologyApr 3, 2026

Biological clocks age within a day without you aging!

Biological age clocks derived from DNA methylation patterns show significant day-to-day fluctuations within individuals, independent of actual chronological aging. This instability raises critical questions about their reliability for clinical application and longevity intervention assessment.

LT WireJun 29, 2026

Sex-Specific Biological Age Test Quantifies Organ Aging and Treatment Response

Generation Lab released SystemAge 2.1, a biological age test measuring 460+ biomarkers across 21 organ systems with sex-specific analysis and 99% validated accuracy. The platform tracks organ-level aging trajectories and quantifies treatment response to interventions including stem cells and plasma exchange, enabling practitioners to detect accelerated aging earlier and monitor intervention efficacy with precision.

Nature - npj AgingAug 13, 2026

Methylation mapping links aging pathways to disease risk

Researchers have developed an interpretable epigenetic clock that maps DNA methylation patterns to specific aging pathways and disease profiles, enabling prediction of biological age and disease risk with greater mechanistic clarity. This advances the capacity to distinguish between chronological aging and disease-driven methylation changes, offering a more precise tool for identifying which physiological systems are accelerating in individual patients.

Nature AgingJun 24, 2026

Epigenetic clocks measure drift, not aging itself

Epigenetic clocks quantify the cumulative drift in DNA methylation patterns that occurs with aging, yet their functional relationship to aging outcomes remains poorly defined. Understanding what these clocks actually measure—rather than assuming they capture aging itself—is essential for interpreting their clinical utility in longevity assessment.

Nature - npj AgingJul 20, 2026

Epigenetic aging signatures unlock precision intervention pathways

Epigenetic clocks measure aging at the molecular level by tracking DNA methylation patterns and gene expression changes. Decoding these signatures reveals specific biological pathways driving accelerated aging, enabling targeted interventions before functional decline becomes apparent.