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Stay healthy for the moments that matter most
Stay healthy for the moments that matter most
Don’t leave your health to chance
Don’t leave your health to chance
“Normal” labs aren’t built to protect your future. Function goes deeper, testing 100+ biomarkers to give you clarity, confidence, and early action steps. Because staying healthy isn’t just about you, it’s about the ones who count on you.
The ratio of Apolipoprotein B (found in "bad" cholesterol particles like LDL) to Apolipoprotein A1 (found in "good" cholesterol particles like HDL) evaluates the balance between harmful and protective cholesterol particles providing a risk assessment for conditions like atherosclerosis heart attack and stroke. A higher ratio typically indicates a greater risk of cardiovascular disease. *This add-on test is available for an additional cost and is not included in the $499 membership.
Measures the number of LDL particles, which are the carriers of cholesterol. Too many LDL particles can lead to plaque buildup in arteries, increasing the risk of heart disease and stroke.
About 50% of people who suffer heart attacks have a normal cholesterol level. Considering this, many cardiologists believe Lp(a) to be a major driver of cardiac events. This invaluable test is used by specialists but is not yet widely adopted in primary care. Lp(a) is a genetic marker that determines risk, particularly for those with symptoms or a family history of cardiovascular disease. Lipoproteins are made of lipids (fats) and proteins (energy) and are referred to as "sticky proteins."
Insulin levels can uncover reasons behind abnormal blood sugar, insulin resistance, and more. It can also reveal hidden blood sugar issues even years before they escalate to something like diabetes. Establishing one's insulin baseline can be incredibly insightful to how one's lifestyle affects health.
Too much glucose (hyperglycemia) is a major driver of many diseases and illnesses, including cancer, diabetes, high blood pressure, heart attacks, kidney disease, and Alzheimer’s disease. Glucose is a type of sugar (from food) that the body uses for energy. When glucose is not absorbed and used, it can form glycogen and be stored as fat in the liver. Over time, this can lead to a decline in overall health.
Potassium levels can detect kidney disease, liver disease, heart failure, high blood pressure, or other disorders. As an electrolyte, potassium helps muscles contract, aids digestion, allows nerves to transport messages from the brain to the body, and balances fluids and regulates blood pressure.
The estimated glomerular filtration rate (eGFR) is a key measure of kidney function essential for identifying changes that may impact cardiovascular and metabolic health. Testing supports early intervention in kidney-related issues.
Urea nitrogen is a waste product that the kidneys flush out, but the presence or buildup of urea nitrogen waste in the blood means the kidneys aren't regulating waste properly. Compared to one's creatinine levels, this test can screen for kidney disease.
Albumin is the most abundant protein in the blood and plays a vital role in maintaining fluid balance and transporting nutrients. Healthy albumin levels are critical for supporting bone health, as they influence calcium transport and overall bone metabolism.
A lipase test is able to show swelling or inflammation in the pancreas, a condition known as pancreatitis. It can also reveal other health conditions such as kidney disease, pancreatic cancer, and problems with the gallbladder or esophagus. Lipase is an enzyme produced by the pancreas that helps the body digest fats.
Refers to the most common or average size of LDL particles in your blood. This is important because smaller LDL particles are more likely to contribute to plaque buildup in arteries, increasing the risk of cardiovascular disease.
Total cholesterol numbers are part of a risk assessment for heart disease. Too much cholesterol in the blood can damage arteries and blood vessels and elevate the risk for stroke, heart attack, and heart disease. Cholesterol is a fatty substance produced by the liver to help with thousands of bodily functions, such as building cells, promoting hormone and brain function, and synthesizing vitamin D.
Measures the ratio of total cholesterol levels to high-density lipoprotein cholesterol (HDL).
ALP can help detect and/or monitor conditions related to the liver, malnutrition, autoimmune disorders, or bone disease. ALP is an enzyme that breaks down proteins. It is found throughout the entire body, but is mostly prevalent in the liver, bones, intestines, and kidneys.
AST is an enzyme mostly found in the liver and helps metabolize amino acids. Testing for AST in the blood can help detect liver damage from injury or a number of diseases and conditions, like hepatitis, cirrhosis, mononucleosis, or other liver diseases, heart problems, or pancreatitis.
Your membership
Your membership
What could cost you $15,000 is $499
What could cost you $15,000 is $499
Testing is easy
Testing is easy



Take charge of your health starting with knowledge
Take charge of your health starting with knowledge
What does a Function membership include?
For $499 per year, a Function membership gives you:
- 100+ lab tests at the start of each year—no hidden costs, no insurance required.
- 60+ follow-up tests at 3–6 months to track changes.
- Insights from top doctors based on your results.
- A written clinician summary to help you understand your data.
- Access to re-test at transparent prices when needed.
- Option to purchase additional tests, including Lyme, STDs, and allergies.
- Access to groundbreaking tests, like the Galleri Multi-Cancer Early Detection test.
Function is for anyone 18 and older. The sooner you establish a baseline, the better—you’ll see where you stand today and track changes over time. Understanding your body’s trends gives you the power to make informed decisions about your future.
Function takes privacy extremely seriously. We use a range of the latest technical security tools and administrative measures to safeguard your data against unauthorized access or disclosure. Note that Function cannot secure personal data that you release on your own or that you request us to release, so we recommend carefully considering with whom you choose to share this data. Read our Privacy Statement.
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 may be FSA/HSA eligible. You should check with your plan administrator to confirm eligibility. Function provides you with a receipt to assist you with submitting to an FSA/HSA plan.