// BLOOD TESTS
Function Health vs SiPhox Health: Complete Blood Test Comparison Guide 2025
Function Health and SiPhox Health represent two compelling approaches to comprehensive at-home blood testing for health optimization. Function Health positions itself as a premium service offering 100+ biomarkers with physician review for $499, targeting health enthusiasts willing to invest in extensive analysis. SiPhox Health takes a more accessible approach with 70+ biomarkers via finger prick testing at $175, focusing on actionable insights without breaking the bank. Both services cater to BodyOS users seeking to optimize their health through data-driven insights, but they differ significantly in testing methodology, biomarker breadth, and price points. Function Health requires traditional lab visits for venous blood draws, while SiPhox pioneered painless upper arm collection technology that eliminates needles entirely. The choice between these platforms often comes down to whether you prioritize maximum biomarker coverage or prefer more frequent, affordable testing cycles.
Function Health
$499
SiPhox Health
$175
[FEATURE COMPARISON]
| Feature | Function Health | SiPhox Health |
|---|---|---|
|
Number of Biomarkers Total biomarkers measured in comprehensive panel |
100+ biomarkers (comprehensive panel) | 70+ biomarkers (Ultimate 360 panel) |
|
Testing Methodology How blood samples are collected |
Venous blood draw at Quest Diagnostics labs | Painless upper arm collection at home (5 minutes) |
|
Test Frequency Recommended testing interval for optimal tracking |
Every 6 months (2 tests per year included) | Every 3 months (quarterly subscription available) |
|
Results Turnaround Time from sample collection to receiving results |
24-48 hours for initial results, 1 week complete | 5-7 business days with personalized action plan |
|
Professional Support Access to healthcare professionals and coaching |
Physician review included, virtual consultations available | 1:1 health coaching sessions, AI longevity expert chat |
|
Price Point Cost for comprehensive testing service |
$499 annual membership (includes 2 tests) | $175 one-time test, $124 with quarterly subscription |
|
Specialized Biomarkers Unique or advanced markers for longevity optimization |
Advanced lipid panel, comprehensive hormone analysis | ApoB, Lipoprotein(a), sensitive CRP, homocysteine |
|
Data Integration Ability to track and integrate health data over time |
Trend tracking, can upload external lab results | Seamless 3rd party test uploads, wearable integration |
[PROS & CONS]
Function Health
Pros
- 100+ biomarkers provide comprehensive health snapshot
- Physician review adds clinical expertise and credibility
- Excellent value at $249.50 per comprehensive test
- Fast results turnaround (24-48 hours)
- Integration with Quest Diagnostics ensures lab quality
Cons
- Requires lab visits and traditional blood draws
- Only 2 tests per year limits optimization tracking
- Higher upfront cost barrier ($499 annually)
SiPhox Health
Pros
- Revolutionary painless collection eliminates needles and lab visits
- Quarterly testing frequency ideal for optimization protocols
- Highly affordable at $124 with subscription
- Focus on most actionable longevity biomarkers
- 1:1 coaching and personalized action plans included
- Seamless integration with wearables and third-party tests
Cons
- Fewer total biomarkers (70+) compared to competitors
- Newer technology may have less long-term validation
[OUR VERDICT]
SiPhox Health wins for most BodyOS users due to its innovative testing technology, affordable quarterly monitoring, and focus on the most actionable longevity biomarkers.
Function Health and SiPhox Health serve distinctly different segments of the health optimization market, each excelling in their respective domains. Function Health delivers exceptional value for users seeking maximum biomarker coverage with traditional medical oversight. At $249.50 per test (when considering the annual membership includes two comprehensive panels), it provides access to 100+ biomarkers typically costing significantly more through traditional lab channels. The physician review component adds clinical credibility, making it ideal for users with complex health conditions or those working closely with healthcare providers.
SiPhox Health revolutionizes the testing experience through innovative collection technology and focuses on the most actionable longevity biomarkers. Customer testimonials consistently highlight life-saving discoveries, with users identifying conditions like hemochromatosis and coronary artery disease that traditional medicine missed. The 5-minute at-home collection eliminates common barriers to regular testing, while the quarterly frequency aligns perfectly with optimization protocols. At $124 with subscription, it enables sustainable long-term monitoring that most users can afford.
For BodyOS users prioritizing comprehensive analysis and working with healthcare professionals, Function Health offers unmatched biomarker breadth and medical integration. However, for those seeking regular monitoring to optimize interventions and track progress, SiPhox Health's combination of convenience, affordability, and focus on high-impact biomarkers makes it the superior choice for sustained health optimization.
The decision ultimately depends on your health optimization strategy: Function Health for deep diagnostic dives every six months, or SiPhox Health for consistent quarterly monitoring and intervention tracking. Given the importance of regular testing for optimization protocols, SiPhox Health's model better supports the continuous improvement approach that drives real health gains.
Our pick:
SiPhox Health
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