Our team is available during standard business hours. If we’re away, leave a message and we’ll get back to you as soon as possible.

Start a Live Chat on our website — it's the fastest way to connect. You can also email us:

• General inquiries: hello@functionhealth.com
• Billing questions: membership@functionhealth.com

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Log in to Function or the mobile app and start a Live Chat through the chat icon. It’s the fastest way to reach us.

• Login Issues: Chat us here.
• Need urgent help during a lab visit? Text your Function Concierge by replying to the latest SMS from us.

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Reach out to member chat with any questions you might have. While we can't provide medical analysis or treatment plans, Function offers detailed biomarker explanations, potential causes for out-of-range results, and actionable health insights. For medical questions about your results, we recommend consulting a physician. As you track changes over time, you'll better understand your evolving health.

You can call and leave a voicemail on our main line at 833-957-3303. However, we recommend using Live Chat or email for the fastest response.

Members: If you need urgent support while at a lab, do not call the general phone number. Instead: reply via SMS to your Function Concierge Text Number or use Live Chat in the Function platform for immediate help.

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Function is 100% insurance-free. No deductibles. No co-pays. No surprise bills. We are committed to transparent prices and you knowing exactly what you pay for. Function does not accept insurance; however, it is FSA/HSA eligible. Function provides you with an itemized receipt for submitting to an FSA/HSA plan.

Terms vary from provider to provider, so we recommend contacting your insurance company in advance to determine if your purchase qualifies. Please note: Function can provide detailed receipts that include a breakdown of costs, date of payment, date of service, and ordering clinician. Function cannot provide a Tax ID number, a medical diagnosis, or diagnostic codes.

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Function is HSA/FSA eligible. Members can expect to receive an itemized receipt via email within one business day of scheduling lab testing. The receipt will include a cost breakdown, date of payment and service, and the ordering clinician. If you have not received an itemized receipt after one business day of scheduling your lab visits, please email hello@functionhealth.com, and we will ensure one is sent to you. Function does not provide a Tax ID number, medical diagnosis, or diagnostic codes. Reimbursement is not guaranteed. Please contact your FSA/HSA provider in advance to confirm the terms of reimbursement.

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You can cancel your annual Function membership at any time. Function does not offer refunds for prior payments.

Email hello@functionhealth.com with your request.

While we hate to see you go, Function members are welcome to cancel their membership at anytime. To cancel your membership, please select Manage my Membership within the Live Chat and follow the steps to initiate your cancellation. For any assistance needed please reach out to the Function Concierge.

We do not currently offer shareable Function memberships.

We don't offer one-time, on-demand testing because our approach focuses on comprehensive health monitoring. Your membership includes extensive testing with retest options when needed. While healthcare often isolates issues to single aspects and treats the symptoms rather than addressing the root cause of issues, Function provides a broader perspective of what is happening within your body.*