Function Health Review

Overview

Function Health is a preventive health platform founded in 2021 in San Francisco, built around one core idea: comprehensive lab testing at an accessible price. The platform offers 100+ biomarker tests — covering metabolic health, hormones, cardiovascular risk, thyroid function, vitamins, and more — for a flat annual membership fee of approximately $499/year. Results are reviewed with physician interpretation built into the platform, and prescriptions including GLP-1 medications are available for qualifying patients as a follow-on to the testing.

The company has notable credibility in the longevity and preventive medicine space, with Dr. Mark Hyman among those involved in the platform's development. That pedigree has helped Function Health attract an audience that is oriented toward data-driven, proactive health management rather than reactive symptom treatment.

Function Health started as a testing-first company, and that is still the primary value proposition. The prescribing capability — including GLP-1 access — is a secondary layer built on top of the lab platform, not the primary reason most members join. For patients whose sole goal is a GLP-1 prescription at the lowest cost, Function Health is not the most direct path. But for patients who want a comprehensive metabolic baseline before starting GLP-1 therapy, or who want to understand what is driving their weight, metabolic dysfunction, or hormonal imbalances before committing to treatment, Function Health's testing depth is clinically sound and competitively priced.

For context: a comparable panel of 100+ biomarkers through a traditional primary care physician typically generates $2,000–$5,000 in lab fees, often partially covered by insurance but frequently accompanied by billing complexity and delays. At $499/year, Function Health compresses that cost significantly for cash-paying patients.

As of April 2026, the GLP-1 regulatory environment has shifted considerably. Compounded semaglutide lost its FDA shortage exemption in February 2025; compounded tirzepatide faces a 503B enforcement deadline in April 2026. Function Health's prescription offering for GLP-1 medications should be verified at functionhealth.com — patients should confirm which specific medications are currently available and through what pathway.

Medications Offered

• GLP-1 medications for qualifying patients (verify current formulary at functionhealth.com)
• Other medications as clinically indicated based on lab results and physician review

Function Health's primary offering is diagnostic testing, not a medication subscription service. Prescriptions are available through affiliated physicians for patients whose lab results indicate a need and who qualify clinically. Verify current availability at functionhealth.com.

Pricing

The ~$499/year membership covers the 100+ biomarker test panel and physician result interpretation. Prescription medications are priced separately. Verify all current pricing at functionhealth.com.

States Served

Function Health operates as a national telehealth platform. Availability may vary by state for prescription services. Verify coverage in your state at functionhealth.com.

Insurance

The Function Health membership fee is generally not covered by standard health insurance. Some patients may be able to apply HSA/FSA funds to the membership cost or to prescription expenses — verify with your plan. The platform is designed as a direct-pay, membership model.

Consultation Process

1. Join Function Health at functionhealth.com and select a membership plan.
2. Receive a lab order for 100+ biomarkers; visit a local blood draw location (Function Health partners with major draw networks).
3. Results are processed and delivered through the Function Health platform with physician interpretation and educational context for each biomarker.
4. Review results asynchronously through the platform or schedule a video consultation with a physician to discuss findings in depth.
5. If lab results indicate a clinical need and you qualify, a physician can prescribe GLP-1 medications or other treatments as appropriate.
6. Ongoing membership includes periodic retesting to track changes over time.

Pros

• 100+ biomarker panel at ~$499/year is genuinely competitive — comparable panels through traditional care can cost $2,000–$5,000 in lab fees
• Testing-first approach means GLP-1 prescriptions (and other treatments) are grounded in actual metabolic data, not just a questionnaire
• Physician interpretation built into results makes the data actionable for patients without a clinical background
• Strong credibility through association with physicians like Dr. Mark Hyman and the longevity/preventive medicine community
• Annual retesting creates a longitudinal health picture that most patients have never had access to before
• Platform is useful independent of any prescription — the testing value stands on its own

Cons

• Not designed for patients who simply want a fast path to a GLP-1 prescription — the testing-first model adds time and upfront cost before any prescription is available
• The annual membership fee (~$499) is charged before any prescriptions are issued, which may not appeal to patients primarily motivated by medication access
• GLP-1 prescription availability is secondary to the testing mission and should be verified — it is not the core product
• The platform skews toward patients who are health-data-oriented; patients who find extensive lab data overwhelming or anxiety-inducing may not enjoy the experience
• Geographic availability for prescription services may be more limited than for testing — verify by state

Best For

Function Health is best suited for adults who want a comprehensive metabolic baseline before starting GLP-1 therapy, or who suspect an underlying issue (thyroid dysfunction, insulin resistance, hormonal imbalance) driving weight or health problems and want data before committing to treatment. It is also a strong fit for anyone interested in proactive, longevity-oriented health management who wants a much fuller picture than a standard annual physical provides. It is not the right choice for patients whose only goal is the cheapest or fastest path to a semaglutide or tirzepatide prescription.

Editorial Verdict

Function Health's core product — 100+ biomarkers at $499/year with physician interpretation — is among the most compelling value propositions in the preventive health space. The ability to get a comprehensive metabolic picture before starting GLP-1 therapy is clinically sensible and increasingly rare in a market where many platforms rush to prescribe on the basis of a questionnaire. The prescription access is a real capability but a secondary feature; patients should join primarily for the testing. If a GLP-1 prescription follows from the data, that outcome is well-grounded in actual clinical findings. Verify current GLP-1 formulary and pricing at functionhealth.com given the regulatory environment as of early 2026.

Related Content

• Who Qualifies for GLP-1 Medications?
• How Much Does Semaglutide Cost?
• How Much Does Tirzepatide Cost?