Scans were always essential. Now they’re accessible, too.

Function with GNC

myGNC Rewards Members can now get instant access to ultra-comprehensive lab testing for weight loss, muscle gain, energy, recovery, sleep, focus, mood, and more.

Function Health includes 100+ advanced lab tests covering heart, hormones, thyroid, nutrients, metabolic health, toxins, immunity, and more. It is specially designed by medical experts to help you optimize your health and detect diseases early. All lab test results include actionable insights from top doctors. What could cost $15,000 is just $499 and is available at 2,000 lab locations across the US.

Start testing Gift Function

Testing is easy

Schedule lab tests

2,000+ Quest Diagnostics locations

Get 100+ results

Backed by thousands of hours of research

Take action

Make changes and test again

Start testing See how it works

Not your average checkup

No insurance needed

Transparent pricing

Heart testing beyond cholesterol

Autoimmunity testing

Hormones & fertility testing

Nutrient & electrolyte testing

Access to cancer testing

Standard checkup

What could cost you $15,000 is $499

Your health shouldn’t depend on insurance.

HSA/FSA Eligible

Function membership

$42

/month

Charged annually at $499

Join Function

100+ lab tests

Testing twice per year

All-in-one for your whole body

Tracked in one secure place

Clinicians review every result and flag issues

Personalized action plan

Add advanced MRI and CT scans anytime

No insurance, transparent pricing

Join Function

As someone navigating an autoimmune condition, it's been such a relief to finally have a clear, visual way to track what’s going on in my body—and actually understand it.

Noelle

Age 46

Early detection has given me this amazing gift of extra years, probably extra decades, with my family.

Mike

Age 45

After 10 years of dealing with a health issue, 5 years of trying to get doctors to run more in-depth tests, Function finally helped me uncover the root cause.