Function Health vs Parsley Health

Function Health vs Parsley Health: these solve different problems, so the better choice depends on what you want. Function Health ($365/year) is comprehensive biomarker testing with 100+ markers and not much else. Parsley Health (its Complete Care membership runs $150/month if Parsley is in-network with your insurance, or $275/month out of network) is a full functional medicine membership: 60-80+ biomarkers plus ongoing clinician access, health coaching, nutrition plans, and prescriptions. If you mainly want the labs, Function is the value pick. If you want a doctor managing a chronic condition, Parsley is doing far more.

I've personally tested Function Health and worked through its full results experience, and I reviewed Parsley Health's membership and panel details on their own website. This page lays out where the two actually differ so you don't pay for features you won't use.

Below I compare them on pricing, the lab tests included, and which one is the better fit for different goals.

Function vs Parsley Health comparison table

Where Function is stronger than Parsley

• Far lower price: At $365/year, Function costs less than two months of Parsley Complete Care, and tests more biomarkers.
• More comprehensive biomarker panel: Function includes 100+ biomarkers vs Parsley's 80, with specialized markers like omega fatty acids, advanced lipid particles, and heavy metals
• Focus on testing: If you primarily want detailed biomarker data without the full medical membership, Function is more targeted
• Polished data visualization: Function Health's app provides detailed explanations and tracking for all biomarkers

Where Parsley is stronger than Function

• Full medical membership: Parsley includes ongoing access to functional medicine clinicians, coaching, and care management, not just testing.
• Prescription capabilities: Parsley clinicians can prescribe medications and supplements as part of your treatment plan
• Root-cause approach: Parsley focuses on functional medicine principles to address underlying health issues, which can be good for people with complex chronic illnesses (POTS, ME/CFS, etc).

Function vs Parsley Health pricing

Function Health is $365/year for the testing membership. Parsley Health's Complete Care membership is $150/month if Parsley is in-network with your insurance, or $275/month out of network, roughly $1,800 to $3,300/year. That buys far more than labs: ongoing clinician visits, coaching, nutrition plans, and prescriptions. They aren't really priced against each other, since one is a lab service and the other is a care membership that happens to include testing.

Function vs Parsley Health: which is better?

If you primarily want a broad, affordable biomarker panel you can track over time, Function Health is the better value. If you want a clinician actively managing your care, especially for a complex or chronic condition, Parsley Health does much more for the higher price. Choose based on whether you're buying data or buying ongoing care.