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Life Extension vs Function Health

Direct provider comparison | Life Extension Details | Function Health Details

Detailed head-to-head comparison of Life Extension and Function Health blood testing services.

Cost & Value Comparison

Life Extension logo

Life Extension

Annual Cost: $486
Tests per Year: 2
Total Biomarkers: 40+
Cost per Test: $243.00
Function Health logo

Function Health

Annual Cost: $499
Tests per Year: 2
Total Biomarkers: 100+
Cost per Test: $249.50

Service Details

FeatureLife ExtensionFunction Health
Lab LocationsQuest locations2000+ Quest
Key FeaturesMale/Female panels, free wellness specialist consultationCancer markers, autoimmune panel, advanced lipids, clinician review
NotesAnnual sale pricing $243/test. Added cortisol in 2025. HSA/FSA eligible$499/year or $42/month. Lab tests at Quest locations included. Different tests at 6mo

Biomarker Coverage Comparison

Tests in common: 47 biomarkers
Only in Life Extension: 0 biomarkers
Only in Function Health: 40 biomarkers

Tests Only in Function Health

Complete Biomarker Comparison by Category

BiomarkerLife ExtensionFunction Health
Complete Blood Count (CBC)
Hemoglobin✓✓
Hematocrit✓✓
Red Blood Cell Count (RBC)✓✓
White Blood Cell Count (WBC)✓✓
Platelet Count✓✓
MCV, MCH, MCHC✓✓
RDW (Red Cell Distribution Width)✓✓
Lipid Panel / Cardiovascular Health
Total Cholesterol✓✓
LDL Cholesterol✓✓
HDL Cholesterol✓✓
Triglycerides✓✓
VLDL Cholesterol✓✓
Apolipoprotein B (ApoB)✓✓
Lipoprotein (a)—✓
LDL Particle Number—✓
LDL Particle Size—✓
Metabolic Health / Glucose
Fasting Glucose✓✓
Hemoglobin A1c (HbA1c)✓✓
Insulin✓✓
Uric Acid✓✓
Liver Function
ALT (Alanine Aminotransferase)✓✓
AST (Aspartate Aminotransferase)✓✓
ALP (Alkaline Phosphatase)✓✓
GGT (Gamma-Glutamyl Transferase)—✓
Bilirubin (Total)✓✓
Albumin✓✓
Total Protein✓✓
Globulin✓✓
Kidney Function
Creatinine✓✓
BUN (Blood Urea Nitrogen)✓✓
eGFR (Estimated Glomerular Filtration Rate)✓✓
BUN/Creatinine Ratio—✓
Electrolytes &Minerals
Sodium✓✓
Potassium✓✓
Chloride✓✓
Carbon Dioxide (CO2)✓✓
Calcium✓✓
Magnesium✓✓
Thyroid Function
TSH (Thyroid Stimulating Hormone)✓✓
Free T4 (Thyroxine)✓✓
Free T3 (Triiodothyronine)—✓
TPO Antibodies (Thyroid Peroxidase)—✓
Thyroglobulin Antibodies—✓
Iodine—✓
Selenium—✓
Sex Hormones (Male)
Total Testosterone✓✓
Free Testosterone✓✓
SHBG (Sex Hormone Binding Globulin)—✓
Estradiol (E2)✓✓
PSA (Prostate Specific Antigen)✓✓
DHEA-S✓✓
Sex Hormones (Female)
Estradiol (E2)✓✓
Progesterone✓✓
FSH (Follicle Stimulating Hormone)—✓
LH (Luteinizing Hormone)—✓
Prolactin—✓
AMH (Anti-Mullerian Hormone)—✓
Inflammation &Immune Markers
hs-CRP (High Sensitivity C-Reactive Protein)✓✓
ESR (Erythrocyte Sedimentation Rate)—✓
Homocysteine✓✓
Vitamins &Nutrients
Vitamin D (25-Hydroxy)✓✓
Vitamin B12—✓
Folate—✓
Ferritin✓✓
Iron (Serum)—✓
TIBC (Total Iron Binding Capacity)—✓
Stress &Adrenal Function
Cortisol✓✓
Advanced / Specialty Markers
Omega-3 Index / Fatty Acids—✓
Heavy Metals - Lead—✓
Heavy Metals - Mercury—✓
Creatine Kinase—✓
IGF-1 (Insulin-like Growth Factor)—✓
HOMA-IR (Insulin Resistance)—✓
Autoimmune Markers
ANA Screen (Antinuclear Antibodies)—✓
ANA Titer—✓
ANA Pattern—✓
Rheumatoid Factor (RF)—✓
Celiac Disease Panel (Comprehensive)—✓
Cancer Screening Markers
CEA (Carcinoembryonic Antigen)—✓
CA-125 (Ovarian Cancer)—✓
CA 19-9 (Pancreatic/GI Cancer)—✓
AFP (Alpha-Fetoprotein - Liver Cancer)—✓
Additional Specialized Tests
Neutrophil/Lymphocyte Ratio—✓
LDL-P (LDL Particle Number)—✓
LDL Particle Size Analysis—✓
HDL Subfractions (Large/Small)—✓
Transferrin Saturation—✓