Function Health Alternatives (2026): 4 Cheaper Ways to Track Your Biomarkers
Function created the longevity-membership category, but it is not the only option, and rarely the cheapest. Here are four alternatives that track the same biomarkers for less.
Function Health productized the executive physical into a $365/year membership and crossed 100,000+ members - it created the longevity-biomarker category. But $365/year is real money, the waitlist comes and goes, and for a lot of buyers the membership scope is more than they need. The good news: the underlying thing you want - comprehensive bloodwork, tracked over time, with insights on top - is available several other ways, most of them cheaper.
Here are the four alternatives worth comparing, and exactly who each one fits.
First, what you are actually paying Function for
A Function membership bundles four things: a broad biomarker panel (160+ markers), two draws a year, AI insights on your results, and physician review on flagged values. Any alternative is really a question of which of those you need, and how much breadth is enough.
Alternative 1: Mito Health - the closest like-for-like, near-identical price
Mito is the most direct substitute: the same membership model (100+ biomarkers, AI insights, clinician review, year-over-year tracking) at $349/year Core vs Function's $365 - effectively the same price. What separates them is features, not cost. Mito lets you upload past lab PDFs so your history feeds the insights from day one (Function cannot), surfaces a biological-age readout, and offers genetics + gut-microbiome add-ons plus higher tiers (Pro $699, Ultra $1,899) that layer in advanced and cancer screening. Function counters with a wider 160+ panel and two included draws a year vs Mito Core's single draw. If past-lab upload or biological age matters to you, Mito is the pick. See the full head-to-head in Mito Health vs Function Health.
Alternative 2: SiPhox Health - skip the lab and the needle entirely
SiPhox is the at-home route: you collect a small sample from your upper arm with their no-needle EasyDraw device, mail it back, and get up to 60 biomarkers with an AI action plan in about a week, from kits starting around $99. It trades panel breadth (60 vs 160+) for convenience and price, which makes quarterly testing realistic instead of twice a year. For most buyers the longevity-useful signal is the trend line, and testing four times a year at $99 beats twice a year at $365 for watching markers move. HSA/FSA eligible.
Alternative 3: HealthLabs - pay a la carte, no membership at all
If you do not want a subscription, HealthLabs lets you order individual tests (or a custom bundle) directly, draw at a partner lab, and get results - no membership, no recurring bill. You lose the curated panel and AI layer, but you gain total control over what you test and pay only for what you order. The right pick for buyers who already know which markers they care about.
Alternative 4: Hume Body Pod - the body-composition layer Function does not cover
Not a blood test, but worth naming: a lot of what people open a Function membership to track (am I gaining muscle, losing fat, is my metabolic rate moving) is body-composition data, not bloodwork. The Hume Body Pod tracks lean mass, fat, and metabolic rate at home for a one-time ~$229, far cheaper than repeated DEXA scans, and a strong complement to whichever blood panel you choose, especially for GLP-1 users.
The honest comparison
| Option | Price | Biomarkers | Model | Best for |
|---|---|---|---|---|
| Function Health | $365/yr | 160+ | Membership | Wider panel + two draws + largest cohort |
| Mito Health | $349/yr (Core) | 100+ | Membership | Past-lab upload + biological age, same price |
| SiPhox | ~$99+/kit | up to 60 | At-home kit | No-needle, frequent testing |
| HealthLabs | per test | your choice | A la carte | No subscription, full control |
| Hume Body Pod | ~$229 once | body comp | Device | Muscle/fat/metabolic tracking |
So which alternative?
- Want the same membership model with past-lab upload and a biological-age readout → Mito Health
- Hate needles and lab visits, want to test often → SiPhox
- Do not want a subscription → HealthLabs
- Care about body composition, not just blood → Hume Body Pod
- Genuinely value Function's wider 160+ panel, two draws, brand, and refined app, and the $365 is fine → stay with Function Health. It is a good product, just not the only one.
The longevity-stack frame
Biomarker tracking is the foundation the rest of a longevity stack sits on - without it, your supplements and hardware run on guesses. But the foundation does not have to cost $365/year. Pick the option you will actually keep using (frequency and adherence matter more than panel breadth), test consistently for 24+ months, and let the trend lines tell you whether the rest of your stack is working.
For the full membership-tier breakdown, see our Best Diagnostic Platform 2026 guide.
- Ryan, Founder
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