Function Health

Function Health solves a real problem. Getting comprehensive lab work done through traditional healthcare means waiting for a doctor’s appointment, convincing them you need specific tests, and then often paying out of pocket anyway when insurance declines coverage. At $365 per year, Function Health removes all of that friction and gives you more data than most annual physicals include.

The price is the main barrier. $365 upfront is not accessible for everyone, and the platform does not accept insurance. But for someone who actively monitors their health and values data-driven decision making, the cost per test works out to under $5 each across 100 plus markers. The ChatGPT Health integration makes it more useful in 2026 than it was at launch. If preventive health is a priority for you and you’re based in the US, Function Health is worth serious consideration.

Function Health is a membership-based preventive health platform that gives members access to over 100 lab tests annually without needing a doctor’s referral. Founded by Dr. Mark Hyman and Jonathan Swerdlin, it targets health-conscious adults who want comprehensive data about their own biology rather than waiting for symptoms to appear before getting tested. The annual membership at $365 covers hormone panels, metabolic markers, organ function tests, nutritional deficiencies, and dozens of other biomarkers that most people only get tested when something goes wrong.

The platform’s core value is simplicity and access. You schedule a blood draw at a nearby lab partner, results come back within days, and the Function Health app explains each biomarker in plain English with context about what the numbers mean for your health. Physician oversight is included in the membership, so a qualified doctor reviews flagged results and follows up when something needs attention. This is not a DIY lab kit with no medical backing.

As of July 2026, Function Health data integrates directly with ChatGPT Health. That integration lets members bring their biomarker history into ChatGPT conversations and ask AI-powered questions about their results, trends, and what to discuss with their doctor at their next appointment. For people already using ChatGPT for health queries, connecting real lab data adds a layer of personalization that generic health conversations can’t match.