Function Health vs SiPhox Health
Complete Head-to-Head Comparison
Compare costs, biomarker coverage, and value to find the best blood testing service for your needs
Function Health
Quick Comparison Summary
Best Value
Function Health
43.8 biomarkers per $100
Most Comprehensive
Function Health
160+ biomarkers tested
Most Tests Per Year
SiPhox Health
4 tests/year
Cost & Value Comparison
Function Health
Annual Cost$365
Tests per Year2
Total Biomarkers160+
Cost per Test$182
SiPhox Health
Annual Cost$496
Tests per Year4
Total Biomarkers59
Cost per Test$124
Service Details
| Feature | Function Health | SiPhox Health |
|---|---|---|
| Lab Locations | 2000+ Quest | At-home |
| Key Features | Cancer markers, autoimmune panel (ANA), advanced lipids (ApoB), heavy metals (lead), Omega-3, clinician review | Needle-free EasyDraw device, AI longevity expert (Sai), wearable integrations (Oura/Fitbit/Apple Watch), supplement recommendations, third-party lab uploads |
| Notes | $365/year, single membership tier (reduced from $499;Function announced the $365 price directly). 160+ lab tests 2x/year plus on-demand testing. GRAIL cancer screening, MRI/CT scans, Alzheimer's testing, mold reactivity as add-ons. HSA/FSA eligible. | Membership billed per test cycle at $124 (monthly, quarterly or every 6 months - same price per cycle). At the quarterly cadence shown here that is 4 x $124=$496/yr plus shipping. Four core panels included and switchable:Longevity Essentials (25 biomarkers), Thyroid Focus, Hormone Focus, Heart &Metabolic. Ultimate 360 is a paid upgrade at +$125/cycle (59 biomarkers);GLP Monitoring Panel +$75/cycle. At-home needle-free EasyDraw collection. Our 20% affiliate code applies to the first billing cycle only, membership only, excluding shipping and upgrades. HSA/FSA eligible. |
Biomarker Coverage Comparison
47
Tests in Common
61
Only in Function Health
1
Only in SiPhox Health
Tests Only in Function Health
- Hematocrit(Complete Blood Count (CBC))
- Red Blood Cell Count (RBC)(Complete Blood Count (CBC))
- White Blood Cell Count (WBC)(Complete Blood Count (CBC))
- Platelet Count(Complete Blood Count (CBC))
- MCV, MCH, MCHC(Complete Blood Count (CBC))
- RDW (Red Cell Distribution Width)(Complete Blood Count (CBC))
- LDL Particle Number(Lipid Panel / Cardiovascular Health)
- LDL Particle Size(Lipid Panel / Cardiovascular Health)
- Fasting Glucose(Metabolic Health / Glucose)
- Insulin(Metabolic Health / Glucose)
- Uric Acid(Metabolic Health / Glucose)
- GGT (Gamma-Glutamyl Transferase)(Liver Function)
- Sodium(Electrolytes &Minerals)
- Potassium(Electrolytes &Minerals)
- Chloride(Electrolytes &Minerals)
- Carbon Dioxide (CO2)(Electrolytes &Minerals)
- Magnesium(Electrolytes &Minerals)
- Iodine(Thyroid Function)
- Selenium(Thyroid Function)
- ESR (Erythrocyte Sedimentation Rate)(Inflammation &Immune Markers)
- TIBC (Total Iron Binding Capacity)(Vitamins &Nutrients)
- Omega-3 Index / Fatty Acids(Advanced / Specialty Markers)
- Heavy Metals - Lead(Advanced / Specialty Markers)
- Heavy Metals - Mercury(Advanced / Specialty Markers)
- Creatine Kinase(Advanced / Specialty Markers)
- IGF-1 (Insulin-like Growth Factor)(Advanced / Specialty Markers)
- HOMA-IR (Insulin Resistance)(Advanced / Specialty Markers)
- ANA Screen (Antinuclear Antibodies)(Autoimmune Markers)
- ANA Titer(Autoimmune Markers)
- ANA Pattern(Autoimmune Markers)
- Rheumatoid Factor (RF)(Autoimmune Markers)
- Celiac Disease Panel (Comprehensive)(Autoimmune Markers)
- CEA (Carcinoembryonic Antigen)(Cancer Screening Markers)
- CA-125 (Ovarian Cancer)(Cancer Screening Markers)
- CA 19-9 (Pancreatic/GI Cancer)(Cancer Screening Markers)
- AFP (Alpha-Fetoprotein - Liver Cancer)(Cancer Screening Markers)
- Neutrophil/Lymphocyte Ratio(Additional Specialized Tests)
- LDL-P (LDL Particle Number)(Additional Specialized Tests)
- LDL Particle Size Analysis(Additional Specialized Tests)
- HDL Subfractions (Large/Small)(Additional Specialized Tests)
- Cystatin C(Kidney Function)
- Reverse T3(Thyroid Function)
- Pregnenolone(Sex Hormones (Male))
- Mean Platelet Volume (MPV)(Complete Blood Count (CBC))
- Zinc(Electrolytes &Minerals)
- Copper(Electrolytes &Minerals)
- Oxidized LDL (OxLDL)(Lipid Panel / Cardiovascular Health)
- Fibrinogen(Inflammation &Immune Markers)
- Lipase(Liver Function)
- PTH (Parathyroid Hormone)(Electrolytes &Minerals)
- Osteocalcin(Advanced / Specialty Markers)
- Leptin(Advanced / Specialty Markers)
- Adiponectin(Advanced / Specialty Markers)
- C-Peptide(Metabolic Health / Glucose)
- Immature Granulocytes(Complete Blood Count (CBC))
- Apolipoprotein A1 (ApoA1)(Lipid Panel / Cardiovascular Health)
- Neutrophils(Complete Blood Count (CBC))
- Lymphocytes(Complete Blood Count (CBC))
- Monocytes(Complete Blood Count (CBC))
- Eosinophils(Complete Blood Count (CBC))
- Basophils(Complete Blood Count (CBC))
Tests Only in SiPhox Health
- Free Androgen Index (FAI)(Additional Specialized Tests)
Complete Biomarker Comparison by Category
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Ready to Choose?
Based on this comparison, make an informed decision about your blood testing provider
Frequently Asked Questions
Which provider is better:Function Health or SiPhox Health?
Function Health offers better value with 43.8 biomarkers per $100 spent, making it more cost-effective for comprehensive testing.
However, the best choice depends on your specific health goals, budget, and which biomarkers are most important for your situation.
How much do Function Health and SiPhox Health cost per year?
Function Health costs $365 per year for 2,
while SiPhox Health costs $496 per year for 4.
The cost per test is $182
for Function Health and $124
for SiPhox Health.
What biomarkers does Function Health test that SiPhox Health doesn't?
Function Health includes 61 unique biomarkers not found in SiPhox Health's panel.
These include Hematocrit, Red Blood Cell Count (RBC), White Blood Cell Count (WBC), and others.
Can I use insurance with Function Health or SiPhox Health?
Both Function Health and SiPhox Health are direct-to-consumer services that typically don't accept insurance.
However, you may be able to submit receipts to your insurance for reimbursement if you have out-of-network benefits,
or use HSA/FSA funds for payment. Check with your insurance provider and the testing companies for specific policies.
How often should I get blood work done?
Most health optimization experts recommend testing 2-4 times per year to establish baselines and track trends.
Function Health includes 2 in their annual membership,
while SiPhox Health includes 4.
More frequent testing allows you to track the effectiveness of interventions and catch changes early.
Where can I get blood drawn for these tests?
Function Health uses 2000+ Quest,
while SiPhox Health uses At-home.
Both typically have thousands of collection centers nationwide. You'll schedule your blood draw through their platform after ordering.
Frequently Asked Questions
Which is cheaper, Function Health or SiPhox Health?
Function Health is cheaper at $365/year compared to SiPhox Health at $496/year.
Which tests more biomarkers, Function Health or SiPhox Health?
Function Health tests 160+ biomarkers while SiPhox Health tests 59 biomarkers.
What is Function Health best for?
Function Health offers 160+ biomarkers for $365/year with 2 test(s) per year. Key features include:Cancer markers, autoimmune panel (ANA), advanced lipids (ApoB), heavy metals (lead), Omega-3, clinician review
What is SiPhox Health best for?
SiPhox Health offers 59 biomarkers for $496/year with 4 test(s) per year. Key features include:Needle-free EasyDraw device, AI longevity expert (Sai), wearable integrations (Oura/Fitbit/Apple Watch), supplement recommendations, third-party lab uploads
Which offers better value, Function Health or SiPhox Health?
Function Health offers better value with approximately 43.8 biomarkers per $100 spent, compared to SiPhox Health's 11.9 biomarkers per $100.