All tests are processed in CLIA and CAP certified labs widely trusted by the medical community. Your blood and urine samples are collected by licensed medical technicians on-site and processed with state-of-the-art equipment. This is the safest and most accurate way to be tested given the advanced processing needs for the wide range of tests in which Function gives you access.
Once a set of lab tests has been scheduled, we are unable to make any changes to it. However, as a member, it is easy to re-test any biomarker at any time. If there is enough time between your visit and the new test(s) being ordered, they may be run at the same time as your scheduled test.
At this time, we do not offer access to testing for those who are pregnant because many results may be affected by pregnancy.
We are here for you post pregnancy. For those post pregnancy, you can be tested with Function after two menstrual cycles.
We do not offer access to one-time, on-demand testing. Function membership includes comprehensive testing, and members have the ability to re-test any individual tests when necessary. While healthcare often isolates issues to single aspects and treats the symptoms rather than addressing the root cause of issues, Function was created to provide a complete perspective of what is actually happening inside your body. We don't want you to miss a thing.*
No, you don't have to worry about that. Your lab tests are ordered and reviewed by licensed clinicians.
It is required that you fast for 8 hours before most tests. It is also strongly recommended to be well-hydrated to ensure easier blood draws and the most accurate urinalysis. If you do not fast, some of your biomarkers will be skewed. We also recommend a morning test for the most accurate results related to hormones such as testosterone and cortisol.
It is recommended that you do not discontinue any medication without discussing with a doctor first.
No. The large number of tests included with your Function membership would not work via self-collect, at-home kits. We explored using these mail-in kits for single tests but concluded that they would be too unreliable, due to ongoing issues with improper finger pricks and instructions-adherence that could interfere with specimen integrity, specimen size, temperature control, ambient particle exposure, time delay, and human tissue damage.
An average lab visit takes 15 to 30 minutes, as long as you are on time. Your first set of tests each year may require two lab visits to complete all tests.
A lab visit may cover 100+ tests, but only 35mL of blood is typically drawn at one time to keep things easy. For context, a blood donation is 14x more at ~500mL.
Pro tip: Being very hydrated improves blood flow and makes the test much easier and quicker.
At least twice a year. Your Function membership includes:
It’s easy. After signing up for Function Health, you will receive an email and text message to schedule a convenient time and location for your lab visit. You will be tested at one of over 2,000 locations nationwide, within 10 miles of nearly every home in the United States.
Using older lab tests to understand your current health is typically not recommended, as your health is ever-changing. Function offers comprehensive lab testing that makes it easy to understand your current health status. Function also compares your most recent results with past results to reveal trends.
It is suggested that you avoid consuming seafood 48 hours prior to any test that looks for heavy metals like mercury, which is included with Function membership.
Tests are performed by professional phlebotomists who are likely used to working with people who have fainted in the past. Let your phlebotomist know if you have had a history of fainting. Note that blood draws are safe and carry little to no risk.
Function includes 5x more lab tests than most primary care check-ups. This includes heart, thyroid, hormones, metabolic, kidneys, liver, nutrients, heavy metals and more. Function also tracks your results over time and brings you actionable insights from the world’s top doctors based on your specific results. All lab tests are ordered and reviewed by licensed clinicians.
You will be tested at one of over 2,000 locations across the US, within 10 miles of nearly every home in the United States. Our lab partner performs over 50 million tests per year and is trusted by the entire medical community. Lab visits are not currently available in New York, New Jersey, Rhode Island, Hawaii or Puerto Rico.
Testing your body's function every six months can help you understand how it is functioning over time. By monitoring changes across specific intervals, it becomes easier to understand where your health may be headed.
Knowing your body in this way gives you the power to positively influence your health's future. Most of the time, a lab test only looks at a single point in time. Comparing your results over time creates a whole new set of invaluable data, allowing you to set a personal baseline. Ongoing testing and iterative changes in your daily life are the new standards for taking ownership of your ever-changing health.
With a Function membership, you can benefit from 100+ tests once a year and another 60+ tests six months later, as well as access to re-test anytime.
Your Annual Function test looks at over 100 biomarkers, from heart and hormones to liver and heavy metals. Usually, only 35mL of blood is drawn at one time, which is why your set of tests may be split into two lab visits. For context, a blood donation is 14x more at ~500mL.
Pro tip: Being extra hydrated improves blood flow and may make your blood test quicker. We encourage you to book your two lab visits within the same week for consistency in your results.
Biotin (Vitamin B7) may affect results for the following tests: Testosterone, Cortisol, Thyroid Stimulating Hormone, T3, T4, Follicle Stimulating Hormone, Estradiol, and Luteinizing Hormone. Some choose to stop taking biotin 72 hours prior to testing.