Compare your options · New York
Your options
Function Health, Superpower, InsideTracker
Large biomarker panels and a results dashboard. Good for data. Treatment and ongoing physician care are limited or sold separately.
Hims, Ro
Fast prescriptions for a specific issue. Usually no full lab workup and no single doctor who follows you over time.
Everlywell
Single tests you collect yourself. Useful as a spot check, not a care plan.
Fountain Life, Catalyst
Physician led care built on your labs. This is where Catalyst sits.
How we're different
How Catalyst compares
Catalyst
Precision
Function
Health
Telehealth
Hims, Ro
DTC Lab Kits
Everlywell
Longevity Clinics
Fountain Life
Labs drawn at home by a phlebotomist
One dedicated physician
Direct line to your doctor
Treatment and Rx
Primary and acute care
✓ Yes ◐ Partial ✕ No Based on publicly available information as of October 2026.
What’s included
One membership with at home labs, a dedicated physician, treatment and quarterly retesting. Most members pay with HSA or FSA funds.
A phlebotomist draws your labs at home or at your office
60+ biomarkers across hormones, metabolism and inflammation
One physician, Dr. Westley Spiro, who reviews your results with you and builds your protocol
Prescriptions and treatment when your labs and goals call for it
Quarterly retesting so your plan keeps adjusting
Primary and acute care, with referrals to specialists
HSA and FSA eligible, with itemized receipts
You already have Function Health or similar results and want a doctor to act on them
You want hormone, metabolic or longevity care from a physician who knows your history
You live or work in New York and want labs drawn without a waiting room
If you only want a once or twice a year snapshot of your biomarkers and plan to manage everything yourself, a testing platform like Function Health or Superpower may be enough.
FAQs
Questions about switching from Function Health
Is Catalyst a Function Health alternative?
Yes, for people who want testing plus an ongoing physician relationship. Catalyst includes at home lab draws, a dedicated doctor, treatment and quarterly retesting in one membership.
Can I bring my Function Health results to Catalyst?
Yes. Members can bring their Function Health results and your physician will review them as part of your care. If you'd like a one time lab analysis instead of a membership, we typically run our own comprehensive blood panel drawn at your home, but you're welcome to bring your Function Health results instead.
Does Catalyst take insurance?
No. Most members pay with HSA or FSA funds and we provide itemized receipts.
Where is Catalyst located?
240 W 37th St, 5th Floor, New York, NY 10018. Labs are drawn at your home or office.
Concierge precision medicine · New York