Function Health vs. Lifeforce
The numbers.
NOT CLEARED
No FDA clearance, registration, or CE marking found.
- Price
- $365–$499
- Founded
- 2021
- HQ
- Austin, TX, USA
NOT CLEARED
No FDA clearance, registration, or CE marking found.
- Price
- $349–$349
- Founded
- 2021
- HQ
- Carlsbad, CA, USA
Which route is yours?
Choose Function Health if you prioritise the trade-offs in column A — see the bench above and the long-form below.
Choose Lifeforce if column B's trade-offs fit your stack better.
Side-by-side, in detail.
The Matchup
The cleanest structural comparison in the DTC bloodwork market: a data-only diagnostic platform versus a closed-loop concierge membership. Function Health sells breadth — 100+ biomarkers at enrollment plus 60+ follow-up tests mid-year, a clinician-reviewed action plan, and a trends dashboard, with no prescription pathway and no supplement marketplace. Lifeforce sells the loop — a narrower 40+ biomarker panel wrapped in included physician and health-coach consultations, quarterly retesting, and a prescription optimization track (HRT, GLP-1, peptides). The two brands are not really competing on biomarker count; they are competing on what happens after the draw.
Head-to-Head Comparison
| Feature | Function Health | Lifeforce |
|---|---|---|
| Listed price | $365–$499/yr | $349 (membership entry) |
| Model | Data-only diagnostic | Closed-loop diagnostic + clinician + Rx |
| Biomarkers at enrollment | 100+ | 40+ |
| Follow-up testing | 60+ mid-year | Quarterly retesting cadence |
| Clinician consultation | Review + action plan (no live Rx) | Physician + health-coach included |
| Prescription pathway | None | HRT / GLP-1 / peptides |
| Lab draw | In-person Quest (2,000+ locations) | Lab draw + telehealth loop |
| Brand halo | Dr. Mark Hyman | Tony Robbins / Peter Diamandis |
| Supplement/Rx upsell pressure | Low (data-only) | High (closed-loop economics) |
| FDA status | Not cleared (LDT) | Not cleared (LDT) |
| Markets | US only | US only |
Where Function Health Wins
- Widest measured breadth per cycle. 100+ biomarkers at enrollment plus 60+ mid-year follow-ups is roughly 2.5× Lifeforce’s 40+ panel. For buyers who want the broadest organ-system snapshot, Function is structurally ahead.
- No prescription or supplement conflict of interest. Function is data-only. It doesn’t profit from selling you therapeutics based on your results, so the action plan isn’t steered toward platform-margin products.
- Predictable annual cost. The diagnostic is the product; there’s no recurring prescription or coaching tier that quietly multiplies the real annual spend.
- Quest draw network depth. 2,000+ Quest locations make the in-person draw logistically easy almost anywhere in the US.
- Category-defining recognition. When buyers think “comprehensive longevity bloodwork,” they think Function Health — the Mark Hyman brand halo carries the category.
Where Lifeforce Wins
- It closes the loop. Function hands you data and a plan; Lifeforce hands you a physician, a health coach, quarterly retests, and a prescription pathway. For buyers who want diagnostics and the intervention in one membership, that’s the entire value proposition.
- Included clinical consultation. Physician and health-coach access is bundled, not an add-on. Function’s model is review-and-dashboard, not a live concierge relationship.
- Prescription optimization track. HRT, GLP-1, and peptide pathways are integrated — the thing affluent 35+ longevity buyers are often actually shopping for. Function can’t prescribe.
- Tighter retest cadence for intervention tracking. Quarterly retesting is built for measuring whether a therapeutic change moved a biomarker — a faster feedback loop than Function’s twice-yearly rhythm.
The Breadth-vs-Loop Trade-Off
This is the central editorial framing. The two platforms optimize for opposite jobs.
| Buyer goal | Better fit |
|---|---|
| Broadest one-shot biomarker snapshot | Function Health |
| Diagnostics + clinician + prescription in one place | Lifeforce |
| Lowest predictable annual diagnostic cost | Function Health |
| Active hormone / peptide / GLP-1 optimization | Lifeforce |
| Avoiding supplement/Rx upsell pressure | Function Health |
Function’s 100+ panel is the breadth leader; Lifeforce’s 40+ panel is deliberately narrower because the panel is a means to an intervention, not the product itself. Comparing them on biomarker count alone misreads what Lifeforce is selling.
The Real-Cost Caveat
Lifeforce’s $349 entry is the membership sticker, not the realistic all-in cost. The closed-loop model is designed to convert into recurring coaching and prescription therapeutics — which is exactly where the recurring spend lives.
| Use case | Function Health (annual) | Lifeforce (annual) |
|---|---|---|
| Diagnostic / membership only | ~$499 | ~$349 entry (recurring membership) |
| With active prescription + coaching pathway | ~$499 (no Rx pathway) | Materially higher (Rx + coaching recurring) |
For buyers who want bloodwork and nothing else, Lifeforce’s entry price looks cheaper — but the model only makes sense if you actually use the prescription and coaching loop, which drives the true annual cost well above the sticker. Function’s number is the number.
The Verdict — Breadth vs the Loop
Choose Function Health if:
- You want the widest measured biomarker breadth per cycle
- You want a predictable, data-only annual cost with no Rx/supplement upsell pressure
- You’re comfortable taking the action plan to your own physician
- You value the category-defining brand and Quest draw convenience
Choose Lifeforce if:
- You want diagnostics plus a clinician and a prescription pathway in one membership
- You’re actively pursuing HRT, GLP-1, or peptide optimization
- You value a quarterly retest cadence tied to interventions
- You want a concierge relationship, not a dashboard
The honest middle case: these brands serve different buyers more than they compete. If you want the broadest data snapshot at a predictable price and you’ll act on it yourself, Function Health is the better diagnostic. If you want the testing and the treatment loop under one roof and you’ll actually use the prescription pathway, Lifeforce’s closed-loop model is what you’re paying for — just go in clear-eyed that the real cost lives in the recurring coaching and Rx, not the $349 sticker.
We’ll update this comparison after independent verification of each platform’s measured-analyte count and Lifeforce’s all-in membership economics.
Related Reading
- Function Health Review — full deep-dive
- Lifeforce Review — full deep-dive
- Function Health vs Superpower — the lawsuit-defining comparison
- Function Health vs InsideTracker — biomarker count vs personalization
- At-Home Blood Tests Hub — full category overview
Changelog
- 2026-06-05: Initial comparison published.