Quick Answer
Biological age blood tests include PhenoAge (9 biomarkers), inflammatory aging markers (CRP, IL-6, TNF-a), metabolic aging (HbA1c, insulin), hormonal aging (testosterone, estradiol), and cellular aging (telomere length). These measure how fast you're actually aging versus your chronological age.
Key Blood Biomarkers for Aging
These are the most validated blood markers for measuring biological aging across different body systems.
PhenoAge Biomarkers
Most validated aging test using 9 blood markers
- • Albumin - protein synthesis and nutrition
- • Creatinine - kidney function
- • Glucose - metabolic health
- • C-reactive protein - inflammation
- • Lymphocyte % - immune function
- • Mean cell volume - red blood cell health
- • RDW - red cell distribution width
- • Alkaline phosphatase - liver/bone function
- • White blood cell count - immune status
Inflammatory Aging (Inflammaging)
Chronic inflammation is the hallmark of aging
- • C-reactive protein (CRP) - general inflammation marker
- • Interleukin-6 (IL-6) - pro-inflammatory cytokine
- • TNF-alpha - tumor necrosis factor
- • ESR - erythrocyte sedimentation rate
- • Neutrophil-to-lymphocyte ratio - immune aging
Metabolic Aging
Metabolic dysfunction accelerates aging process
- • HbA1c - long-term glucose control
- • Insulin (fasting) - insulin resistance
- • HOMA-IR - insulin resistance calculation
- • Triglycerides - metabolic health
- • HDL cholesterol - protective lipid
Biological Age Testing Methods
Multiple validated methods exist for measuring biological age, each with different approaches, accuracy, and cost.
PhenoAge Test
85-90% accuracy in predicting aging outcomes
- • Cost: $200-400
- • Accuracy: Very high
- • Based on: 9 blood biomarkers
- • Predicts: Mortality and disease risk
GrimAge Test
DNA methylation aging clock
- • Cost: $300-600
- • Accuracy: Highest available
- • Based on: DNA methylation patterns
- • Predicts: Lifespan and healthspan
Telomere Length
Cellular aging at chromosome level
- • Cost: $150-300
- • Accuracy: Moderate
- • Based on: Chromosome telomere length
- • Predicts: Cellular health and longevity
Hormonal Age
Endocrine system aging assessment
- • Cost: $100-200
- • Accuracy: Good for specific aspects
- • Based on: Hormone levels
- • Predicts: Vitality and function
How to Interpret Aging Test Results
Your biological age compared to your chronological age reveals your rate of aging.
Biological Age < Chronological
Your body is aging slower than average for your age
Biological Age = Chronological
You're aging at the expected rate for your age
Biological Age > Chronological
Your body is aging faster than average
Test Your Biological Age
Find labs offering biological age testing and discover how fast you're really aging.
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