A comprehensive comparison of the best blood test services available in 2025. We evaluate Function Health, InsideTracker, SiPhox Health, Paloma Health, and Walk-In Lab across pricing, number of biomarkers, ease of use, and overall value to help you choose the right testing service.
Perry is an independent health data researcher and the creator of BiomarkerList. He built this platform to bring transparency to the cost of biomarker testing, comparing insurance-based lab work against flat-rate services like Function Health using real data from across the United States.
Get 100+ biomarker tests for a flat annual fee. Use promo code PHILDESHAIM10 to save on your membership.
Get Started with Function HealthAffiliate Disclosure: BiomarkerList may receive a referral fee if you sign up through links on this page. This does not affect our editorial content or analysis. All data and opinions are independently researched.
Medical Disclaimer: We are not medical professionals and this content is for informational purposes only. Always consult with a qualified healthcare provider before making health decisions.