Understanding what a health membership actually tests is one of the most important steps before joining. Function Health takes a broad approach to laboratory testing, with its current membership including more than 160 lab tests annually. Rather than concentrating on only one area such as cholesterol or blood sugar, the Function testing program covers multiple systems and categories, including cardiovascular health, metabolism, hormones, thyroid function, nutrients, inflammation, autoimmunity, liver and kidney health, and other biomarkers.
More Than 160 Lab Tests Each Year
Function Health currently includes 160+ lab tests annually as part of its standard membership. The company says members test at least twice a year, beginning with more than 100 tests and then completing a follow-up test covering 60+ biomarkers approximately three to six months later. This structure is designed to provide both a broad initial health assessment and an opportunity to monitor changes later in the year.
Heart and Metabolic Health
Cardiovascular and metabolic health are major parts of Function’s testing program. The company’s listed biomarkers include ApoB, Lipoprotein(a), LDL particle measurements, triglycerides, omega-3 levels, and insulin. These measurements can provide information beyond a basic total cholesterol number. Function’s testing information also includes other metabolic and pancreatic measurements. Laboratory results should always be interpreted in the context of the individual’s overall health and medical history rather than viewed as standalone diagnoses.
Hormones and Thyroid
Function also includes a range of hormone and thyroid biomarkers. The current test information lists TSH, free T4, thyroid antibodies, testosterone, anti-Mullerian hormone, and other measurements. Thyroid and hormone testing can involve different considerations depending on an individual’s age, sex, symptoms, medications, and other factors. Function’s repeat-testing model provides an opportunity to compare certain measurements over time, but medical interpretation remains important.
Nutrients and Vitamins
Nutrient-related testing is another component of the Function program. Listed biomarkers include vitamin D, ferritin, iron, and methylmalonic acid, among others. These measurements can provide information relevant to nutritional status and certain metabolic processes. However, a laboratory result alone does not automatically establish the cause of an abnormal value. Diet, absorption, medications, medical conditions, and other factors can influence nutrient-related measurements.
Inflammation and Immune Health
Function also includes testing connected with inflammation and immune-related health. Its listed biomarkers include high-sensitivity C-reactive protein and rheumatoid factor, while the broader testing program includes autoimmunity-related measurements. These types of biomarkers can be complex because abnormal values may have multiple possible explanations. Function’s clinician-reviewed approach is intended to provide additional context, while individuals with concerning results should speak with their healthcare professionals.
Liver and Kidney Health
Liver and kidney function are also represented within Function’s testing categories. Monitoring these systems can be relevant to overall health because the liver and kidneys perform important roles in metabolism, filtration, and maintaining the body’s internal balance. Function’s broader laboratory approach includes measurements connected with these areas along with electrolytes and other general health markers.
Heavy Metals and Environmental Exposures
Another area that distinguishes the Function testing menu is environmental exposure testing. Function lists heavy metal and toxin-related testing among its categories and specifically identifies measurements such as mercury. These tests may be particularly relevant when there is a reason to investigate a particular exposure, although the significance of any result depends on the individual circumstances and appropriate clinical interpretation.
Aging and Long-Term Health
Function also includes biomarkers associated with aging and long-term health tracking. Its current information lists measurements such as IGF-1, DHEA-S, sex hormone-binding globulin, homocysteine, and vitamin D in its broader testing categories. The company positions these measurements as part of a long-term approach to understanding changes in the body rather than relying on one annual snapshot.
What About Cancer-Related Testing?
Function’s testing information includes a category for cancer and other silent risks, and its website lists access to the Galleri Multi-Cancer Detection Test as an available option. It is important to distinguish this from the standard 160+ laboratory tests and from a diagnostic cancer evaluation. The Galleri test and other specialized services have their own eligibility, limitations, and costs, so people considering them should review the current information and discuss appropriate screening with a qualified healthcare professional.
How Often Are Tests Repeated?
Function recommends testing at least twice per year. The initial testing includes 100+ tests, while the follow-up includes 60+ biomarkers. Function also states that members can test individual biomarkers on demand for an additional member-only cost. This means the platform can support both scheduled testing and additional testing when appropriate.
Where Does the Testing Take Place?
Function currently provides access to more than 2,000 Quest Diagnostics locations across 48 states. Members can schedule their appointments through the Function platform. In selected areas, an at-home blood draw by a licensed specialist is also available. Function says a typical lab visit takes approximately 15 minutes, although some members may require two visits depending on the circumstances.
Why Understanding the Test Menu Matters
A large testing menu can provide more information, but more testing does not automatically mean that every test is necessary for every individual. The value of a test depends on the person’s health history, symptoms, risk factors, and goals. Function provides a broad set of biomarkers, while healthcare professionals can help determine how particular results should be understood and whether additional evaluation is appropriate.
Final Thoughts
Function Health‘s laboratory program is designed to provide a broad view of multiple aspects of health. Its current membership includes 160+ annual lab tests covering areas such as heart health, metabolism, hormones, thyroid function, nutrients, inflammation, liver and kidney health, autoimmunity, and environmental exposures. With twice-yearly testing and digital tracking, Function focuses not only on collecting results but also on following changes over time. For people researching comprehensive preventive health testing, understanding the full test menu is an important part of deciding whether the membership fits their needs.
