Function Health vs Marek Health
Marek Health is cheaper to start ($250 vs $365 per year, lowest published plans). Function Health scores higher overall (9.0 vs 7.9).
By Julian Caraulani · prices checked
Quick verdict
Our pick between the two: Function Health
Function Health scores 9.0/10 against 7.9 for Marek Health, ahead on price, access and reputation. Marek Health can still be the better fit: it is best for hormone-focused testers who want a large one-off panel with free and total testosterone.
Side by side
| Function Health | Marek Health | |
|---|---|---|
| Lowest price | $365/yr (yearly membership, auto-renews) | $250/yr (one-off panel) |
| Our score | 9.0/10 | 7.9/10 |
| Treatments | Longevity memberships | Lab test orders |
| Medication in price | Not stated | Not stated |
| Drugs dispensed | Not stated | Not stated |
| Labs | Not stated | Not stated |
| Membership | Not stated | Not stated |
| Insurance | No; self-pay | No; self-pay |
| States | 48 states (not RI, HI), per its own site (2026-10-31) | 47 states (not NY, NJ, RI), per its own site (2026-10-31) |
| Cancellation | Cancel and rejoin anytime; no pauses; no refunds for prior payments; auto-renews annually at then-current price. | No subscription, minimum commitment, or cancellation fee; pay per service. |
| FDA warning letters | None found (October 31, 2026) | None found (October 31, 2026) |
| Trustpilot | 4.5/5 (3,102 reviews) | No profile we could quote |
| Best for | People who want the widest yearly panel, retested twice, in one membership. | Hormone-focused testers who want a large one-off panel with free and total testosterone. |
| Prices checked | 2026-10-31 | 2026-10-31 |
Function Health: a closer look
Yearly membership: 100+ markers at Quest, a mid-year retest and a clinician summary. We searched the FDA warning-letter database on October 31, 2026 and found no letter naming Function Health.
In its favour
- Measures ApoB, Lp(a), fasting insulin, omega-3 and heavy metals in the base price
- Two draws a year included
- Clinicians review every result
To weigh
- No refunds for prior payments, and membership auto-renews at the then-current price.
- '160+ lab tests' counts the mid-year retest; the annual draw is 100+.
- NY/NJ residents can be billed lab fees on top of the membership, amount not disclosed upfront.
- Not available in Rhode Island, Hawaii or Puerto Rico.
Marek Health: a closer look
Marek Diagnostics sells expert-built panels at Quest; separate coaching program for treatment. We searched the FDA warning-letter database on October 31, 2026 and found no letter naming Marek Health.
In its favour
- No subscription: pay per panel
- Measures free testosterone by equilibrium dialysis
- Low single-test prices
To weigh
- Privacy policy lists health information as shared/sold to advertising partners (CCPA disclosure).
- Lab orders unavailable in NY, NJ, RI.
- Program costs stack: $299 intake + labs from $450 + treatment; Marek's own estimate is about $1,599 in year one.
- Treatment requires an annual physical from an outside clinician.
Which should you choose?
Choose Function Health
Best for people who want the widest yearly panel, retested twice, in one membership. Its lowest all-in plan is $365/yr (yearly membership, auto-renews).
Check Function Health's priceChoose Marek Health
Best for hormone-focused testers who want a large one-off panel with free and total testosterone. Its lowest all-in plan is $250/yr (one-off panel).
Check Marek Health's priceFunction Health vs Marek Health: questions people ask
Is Function Health or Marek Health cheaper?
Marek Health starts lower at $250 per year versus $365 at Function Health, comparing each program's lowest all-in plan.
Which is better, Function Health or Marek Health?
On our published score Function Health rates 9.0 and Marek Health rates 7.9. Function Health is best for people who want the widest yearly panel, retested twice, in one membership; Marek Health is best for hormone-focused testers who want a large one-off panel with free and total testosterone.
Do Function Health and Marek Health offer the same treatments?
Function Health: Longevity memberships. Marek Health: Lab test orders.
Does either include the medication in the price?
Function Health: not stated. Marek Health: not stated.
Blood Test Watchdog compares testing services. It is not medical advice, does not interpret results and does not publish reference ranges as advice. Talk to a licensed clinician about which tests you need and what your results mean. Partner links may earn us a commission; our score never depends on it. Compare other programs.