Function Health, the Austin-based company that sells consumers memberships for lab tests and body scans, said on May 12, 2026 that it had acquired SuppCo, a New York startup that rates dietary supplements and helps people manage their supplement routines.
The companies did not disclose the price or other terms.
Function said it would pair SuppCo's supplement guidance with its own blood tests and clinician-guided health plans, so that members get advice on what to take based on their measured biomarkers. Athletech News reported that SuppCo would keep supporting its existing app and users. The announcement did not say how SuppCo's team would be folded in.
What SuppCo built
Steve Martocci and Nick Michlewicz founded SuppCo in 2023. Martocci, its chief executive, previously founded the group messaging app GroupMe, as well as Blade and Splice.
SuppCo's consumer app helps people organise a supplement regimen and stick to it, and Function said it was consistently ranked among the top apps in the App Store's Health & Fitness category. The company has published ratings for more than 35,000 products, using a scoring system it calls TrustScore, and has analysed more than 500,000 supplement routines. It also runs a research arm.
Earlier in 2026, SuppCo launched TESTED by SuppCo, a certification programme that buys supplements anonymously from regular retail channels and checks their active ingredients at an ISO 17025-accredited laboratory. Function said earlier SuppCo testing had found that about half of top-selling supplements did not meet basic standards for label accuracy.
Its testing has drawn attention before. A June 2025 SuppCo report found that four of six best-selling creatine gummies on Amazon contained little or no creatine per serving, and a later analysis found that five of ten popular NAD+ products failed to match their label claims, Athletech News reported.
SuppCo does not earn money directly from supplement sales, which Function presented as a reason its ratings can be trusted.
“Supplements are powerful when used correctly. The problem is that many people are taking the wrong ones, or taking the wrong dose, from sources they have no reason to trust.”
Why Function is buying
Function started with an annual membership covering more than 160 lab tests and has since added MRI and CT scans. It describes its goal as building an AI health operating system that covers labs, imaging and clinician guidance. SuppCo adds the other side of that picture: what people put into their bodies.
More than half of Americans take dietary supplements, Function said, yet most are bought over the counter with little personal advice or independent checking. By combining test results with a record of what members take, Function said it could help them see which inputs may be helping or hurting their health.
Function chief executive and co-founder Jonathan Swerdlin said food, prescriptions and supplements all shape a person's biology, and that SuppCo brought scientific rigour to supplement routines while Function supplied a lifelong baseline of health data on the same platform.
The founders and the funding
SuppCo raised a $5.5 million seed round in October 2024, led by Union Square Ventures and True Ventures, AlleyWatch reported at the time. Function named Greylock, Union Square Ventures, True Ventures, BoxGroup and Compound among SuppCo's investors.
Martocci said many people were taking the wrong supplements or the wrong doses from sources they had no reason to trust. He said joining Function added the one thing SuppCo had lacked: a fuller view of each user's biological data to show whether supplements were actually working.
SuppCo did not disclose its headcount or revenue.
A growing consumer health platform
Function, co-founded by Swerdlin and longevity physician Mark Hyman, raised a $298 million Series B at a $2.5 billion valuation in late 2025, according to Athletech News. It bought imaging startup Ezra in 2025, adding full-body MRI scans, and in April 2026 acquired Getlabs, which sends phlebotomists to members' homes for blood draws. SuppCo was its third acquisition since the start of 2025. Its first-year membership costs $365.
Competition in consumer biomarker testing is growing. Hims & Hers launched a lab-testing offer in 2026, and Superpower, Hone Health and Whoop have also introduced personalised biomarker testing.
The SuppCo deal gives Function a large catalogue of independent product ratings and an app with an existing user base, both of which it can now connect to its members' lab results.
