SONATA vs. Function Health

Pricing reflects advertised standard membership rates. Some tests, imaging, and treatments cost extra.

Function Health ($665/year with two at-home blood draws, or $365/year if you go to a Quest lab) gives you 100+ biomarkers and clinician-reviewed insights. SONATA ($2,500/year) adds whole-genome sequencing and biological aging analysis to 140+ blood biomarkers, with unlimited access to physicians who prescribe and coordinate your care.

Function helps you understand your health. SONATA combines that understanding with ongoing medical care.

1. Health insights vs. ongoing care from your own doctors

This is the biggest difference. Function's core membership doesn't include physician appointments, prescriptions, or treatment, so you'll need your own doctor for those.

SONATA is a doctor-led membership: unlimited physician visits, same-day appointments, prescriptions when appropriate, specialist referrals, and six-month follow-up labs.

For example, if testing shows elevated heart risk, your SONATA physician can discuss medication, prescribe it if needed, and check your follow-up bloodwork. If you need a specialist, your care team coordinates it. Clinical AI helps your doctor connect your genetics, biomarkers, records, and the latest research.

The result is an ongoing care relationship, not a testing service you use alongside one.

2. Personalized insights vs. personalized medical decisions

Function gives you clinician-reviewed results and lifestyle protocols for nutrition, exercise, supplements, and sleep, plus AI tools to explore them. SONATA's physicians use your genetics, biomarkers, and history to make clinical decisions.

Take two people with the same cholesterol. One has a high inherited risk of heart disease; the other doesn't. At SONATA, that difference can mean a lower cholesterol target, preventive medication, or earlier screening.

Your biology doesn't just change your report. It changes the care your doctor recommends, based on your overall risk and the evidence.

3. Comprehensive blood testing vs. a deeper picture of your biology

Function tests 100+ biomarkers, covering heart health, metabolism, hormones, thyroid, nutrients, and inflammation.

SONATA combines three layers of testing:

• 140+ blood biomarkers to track your health over time.
• Whole-genome sequencing to find inherited risks, with polygenic risk scores for 19 conditions.
• DNA methylation testing to measure biological age and pace of aging.

Function gives you a detailed picture of your blood chemistry. SONATA adds the genetic and epigenetic layers blood work can't show, so your physician can catch risks that would otherwise go unnoticed.

Function Health may be a better fit if:

• You want comprehensive blood testing at a lower price.
• You already have a doctor who can review results and manage treatment.
• You mainly want a baseline, biomarker tracking, and lifestyle changes.
• You live outside the cities SONATA serves.

SONATA may be a better fit if:

• You want a dedicated physician who knows your genetics, biomarkers, and history.
• You want whole-genome sequencing and biological aging analysis alongside blood testing.
• You want your risk factors to shape your screening, treatment, and targets.
• You want prescriptions, specialists, and follow-up handled by one team.
• You value same-day appointments, at-home blood draws, and direct access to your care team.

SONATA costs more because it's a different kind of membership: more layers of testing, plus physicians who turn the findings into care that evolves with you.

Both believe healthcare should go beyond the annual physical and catch problems early. Function makes comprehensive testing and insights accessible to more people. SONATA adds genetics, clinical AI, and physicians who act on what they find.

If you want to understand your health more deeply, Function is a strong option. If you want that understanding to shape the medical care you receive, SONATA is built for that.

Explore SONATA to learn more about its personalized approach to preventive care.

1. SONATA. Homepage and membership pricing, What We Test, Personalized Care, How It Works, FAQs.
2. Function Health. Membership, How It Works, FAQs, Imaging.
3. Function Health. Terms of Service, describing the limits of Function's medical services and the role of third-party providers.

Company features, pricing, and availability checked October 28, 2026. This comparison is published by SONATA and is intended for general information, not individualized medical advice.