Function is a membership that gives you access to 160+ lab tests, doctor-reviewed insights, and a personalized health plan so you can understand your results and take action over time.

Anything less could miss critical parts of your health. Typical physicals tend to focus on conventional standards—and what insurance will cover. This broader view can give you key insights to take action sooner.

Our doctors—including Function’s Chief Medical Officer Mark Hyman, M.D.—hand-picked every test based on the latest science around disease detection and long-term health impact. This broader view can give you key insights to take action sooner, such as identifying elevated ApoB levels that increase cardiovascular risk even when standard cholesterol appears normal, or detecting hormone imbalances (like thyroid or sex hormones) that can affect energy, metabolism, mood, and fertility long before symptoms become obvious.

Many members can complete their Annual Test in a single lab visit. But members with an active menstrual cycle will need 2 separate visits for accurate hormone results. Members in Arizona also require 2 visits because of state processing rules. We will walk you through any details that apply to you during scheduling.

Members get access to 160+ lab tests annually, covering heart, hormones, thyroid, liver, and kidneys, as well as potential heavy metal exposures, nutrient levels, inflammation, potential cancer signals, and more. See all that's included here.

Testing now can help you keep feeling your best—and catch small signals that could turn into bigger problems down the line. For example, heart disease can build for decades. Cancer can be silent until later stages.