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Clinics · Comparison

Function Health vs InsideTracker

Both are primarily bloodwork & longevity providers, so the differences are in consult model, what is bundled, who prescribes, and price.

Function Health logo Function Health From $365/yr Read the Function Health review →
vs
InsideTracker logo InsideTracker From $489 first year Read the InsideTracker review →

Side-by-side comparison

Function Health logoFunction HealthInsideTracker logoInsideTracker
Our score9.8 / 1010.0 / 10
Starting price$365/yr$489 first year
Primary serviceBloodwork & longevityBloodwork & longevity
All servicesBloodworkBloodwork
Consult modelUnconfirmedUnconfirmed
PrescriberUnconfirmedMD/DO
LabsIncludedIncluded
InsuranceCash payUnconfirmed
Availability48 states50 states + DC
CancellationSelf-serve onlineSelf-serve online
Trustpilot4.5 / 5 (3,118 reviews)4 / 5 (616 reviews)
Regulatory / legal recordNone foundNone found
Visit ↗Visit ↗

* Provisional score: one or two criteria could not be verified.

Which one is right for you

Choose Function Health if…

Adults who want twice-yearly broad lab testing at a flat cash price and do not need prescribing or treatment from the same service.

  • Core lab panel (160+ tests across two draws per year) included in the $365 annual fee
  • Self-serve cancellation from account settings, documented in the Terms of Service
  • Single published annual price; HSA/FSA eligible

Choose InsideTracker if…

People focused on nutrition and fitness optimization who want a periodic blood panel with algorithmic recommendations and no prescribing.

  • First-year bundle price includes a blood test of up to 54 biomarkers
  • Self-serve cancellation documented in the help center, and a 30-day refund window before testing
  • Prices for tests, bundles, membership and mobile draw are listed publicly

Price: what you actually pay

Function Health

Pricing page (seen 2026-11-05): '$1/day', 'Charged annually at $365'; includes '160+ lab tests annually' across two draws (100+ tests at the annual visit, 60+ tests 3 to 6 months later), clinician review of every result and a personalized protocol. Footnote: the $365 first-year price applies in all states except New York and New Jersey, where testing costs more (amount not stated). Add-on tests and imaging cost extra; the FAQ lists the Annual MRI at $999 for members. Terms s.13(b)(i): the subscription auto-renews at Function's then-current price.

InsideTracker

Store (seen 2026-11-05, unchanged since 2026-10-17): new-customer bundle of membership plus one Ultimate Blood Test is $489 'including annual platform fee'; the Ultimate test is stated to look at 'up to 54 biomarkers'. Multi-test bundles: $761 (2 tests, list $829) and $1,305 (4 tests, list $1,509). Membership alone is $149/yr. For members, additional Ultimate tests are $340 each, $578 for 2 or $1,088 for 4; single-category tests are $99 to $149. Mobile draw is $119 extra and required in NY, NJ, RI, AZ, HI.

What happens after you sign up

Function Health

Testing and insights only. No prescriptions.

InsideTracker

Testing and insights only. No prescriptions. Prescribers: MD/DO.

Cancelling and refunds

Function Health

Terms of Service (last updated 2026-10-07) s.13(b)(ii): cancel before renewal by logging in to my.functionhealth.com, Account Settings, 'Change/Cancel Membership', or by emailing hello@functionhealth.com; cancellation generally takes effect at the end of the billing cycle and access continues until then. s.13(e)(ii): full refund if cancelled within 48 hours of the initial purchase and no specimen has been collected; after that the subscription and all renewals are nonrefundable, with no prorated refund for unused tests. Unused included tests expire at the end of each subscription period (s.13(b)(iii)). FAQ: no pauses; 'Function does not offer refunds for prior payments.'

InsideTracker

Help center: cancel any time via Orders > Manage Subscription > Cancel subscription; access continues until membership expires (one year from activation), with a 30-day grace period. Store refund policy: a full refund may be available within 30 days of purchase if blood or DNA testing has not been completed, by request to support@insidetracker.com; purchases after 30 days are final. Auto-renewal terms are not stated in the help articles, refund policy or store terms of service loaded.

Where each is available

Function Health

FAQ: offered at 2,000+ Quest labs across 48 states, 'but not yet Rhode Island, Hawai'i, or Puerto Rico'. Pricing footnote: the $365 first-year price applies 'in all states except New York and New Jersey'; FAQ says testing there 'can cost more due to state regulations' (amount not published). Arizona members need two lab visits for the Annual Test. DC not mentioned.

InsideTracker

Support FAQ: 'If you're located in the United States, you can access all of our blood tests.' Residents of NY, NJ, RI, AZ and HI must use a mobile blood draw ($119 add-on) or test at a Quest site in another state.

Full breakdown of each

#1 InsideTracker logo

People focused on nutrition and fitness optimization who want a periodic blood panel with algorithmic recommendations and no prescribing.

Starting price
$489 first year
Consult model
Unconfirmed
Prescriber
MD/DO
Labs
Included
Insurance
Unconfirmed
Availability
50 states + DC
Cancellation
Self-serve online
Founded
2009 · Cambridge, MA

Pricing

Store (seen 2026-11-05, unchanged since 2026-10-17): new-customer bundle of membership plus one Ultimate Blood Test is $489 'including annual platform fee'; the Ultimate test is stated to look at 'up to 54 biomarkers'. Multi-test bundles: $761 (2 tests, list $829) and $1,305 (4 tests, list $1,509). Membership alone is $149/yr. For members, additional Ultimate tests are $340 each, $578 for 2 or $1,088 for 4; single-category tests are $99 to $149. Mobile draw is $119 extra and required in NY, NJ, RI, AZ, HI.

Prices as listed on November 5, 2026. They change often; confirm at checkout.

What we like

  • First-year bundle price includes a blood test of up to 54 biomarkers
  • Self-serve cancellation documented in the help center, and a 30-day refund window before testing
  • Prices for tests, bundles, membership and mobile draw are listed publicly
  • HSA/FSA eligible via TrueMed

Watch out for

  • Mobile draw ($119 extra) required for residents of NY, NJ, RI, AZ and HI
  • Each additional member test costs $340
  • Provides wellness recommendations only; no prescribing or treatment
  • Not BBB accredited
Cancelling

Help center: cancel any time via Orders > Manage Subscription > Cancel subscription; access continues until membership expires (one year from activation), with a 30-day grace period. Store refund policy: a full refund may be available within 30 days of purchase if blood or DNA testing has not been completed, by request to support@insidetracker.com; purchases after 30 days are final. Auto-renewal terms are not stated in the help articles, refund policy or store terms of service loaded.

Where it is available

Support FAQ: 'If you're located in the United States, you can access all of our blood tests.' Residents of NY, NJ, RI, AZ and HI must use a mobile blood draw ($119 add-on) or test at a Quest site in another state.

#2 Function Health logo

Adults who want twice-yearly broad lab testing at a flat cash price and do not need prescribing or treatment from the same service.

Starting price
$365/yr
Consult model
Unconfirmed
Prescriber
Unconfirmed
Labs
Included
Insurance
Cash pay
Availability
48 states
Cancellation
Self-serve online
Founded
Austin, TX

Pricing

Pricing page (seen 2026-11-05): '$1/day', 'Charged annually at $365'; includes '160+ lab tests annually' across two draws (100+ tests at the annual visit, 60+ tests 3 to 6 months later), clinician review of every result and a personalized protocol. Footnote: the $365 first-year price applies in all states except New York and New Jersey, where testing costs more (amount not stated). Add-on tests and imaging cost extra; the FAQ lists the Annual MRI at $999 for members. Terms s.13(b)(i): the subscription auto-renews at Function's then-current price.

Prices as listed on November 5, 2026. They change often; confirm at checkout.

What we like

  • Core lab panel (160+ tests across two draws per year) included in the $365 annual fee
  • Self-serve cancellation from account settings, documented in the Terms of Service
  • Single published annual price; HSA/FSA eligible
  • Draws at 2,000+ Quest locations or an at-home draw option

Watch out for

  • Does not bill insurance and is not enrolled with Medicare or Medicaid
  • Refund only within 48 hours of purchase and before any specimen is collected; renewals are nonrefundable and there is no pause option
  • Not available in Rhode Island or Hawai'i; NY/NJ testing costs more and the amount is not published
  • Company states it does not offer medical advice or treatment; credentials of the clinicians who review results are not disclosed
Cancelling

Terms of Service (last updated 2026-10-07) s.13(b)(ii): cancel before renewal by logging in to my.functionhealth.com, Account Settings, 'Change/Cancel Membership', or by emailing hello@functionhealth.com; cancellation generally takes effect at the end of the billing cycle and access continues until then. s.13(e)(ii): full refund if cancelled within 48 hours of the initial purchase and no specimen has been collected; after that the subscription and all renewals are nonrefundable, with no prorated refund for unused tests. Unused included tests expire at the end of each subscription period (s.13(b)(iii)). FAQ: no pauses; 'Function does not offer refunds for prior payments.'

Where it is available

FAQ: offered at 2,000+ Quest labs across 48 states, 'but not yet Rhode Island, Hawai'i, or Puerto Rico'. Pricing footnote: the $365 first-year price applies 'in all states except New York and New Jersey'; FAQ says testing there 'can cost more due to state regulations' (amount not published). Arizona members need two lab visits for the Annual Test. DC not mentioned.

Function Health vs InsideTracker: common questions

Is Function Health or InsideTracker better?

InsideTracker ranks higher on our rubric (10.0 vs 9.8 out of 10; * means provisional, and fully verified scores rank first). That reflects price transparency, labs, availability, cancellation terms and treatment range, not clinical outcomes. InsideTracker: People focused on nutrition and fitness optimization who want a periodic blood panel with algorithmic recommendations and no prescribing. Function Health: Adults who want twice-yearly broad lab testing at a flat cash price and do not need prescribing or treatment from the same service.

Which is cheaper, Function Health or InsideTracker?

Function Health starts at $365/yr (labs included; more in NY/NJ). InsideTracker starts at $489 first year (membership + one Ultimate blood test). Compare what each price includes, especially labs and medication.

Do Function Health and InsideTracker include lab work?

Function Health: included. InsideTracker: included.

Which is easier to cancel?

Function Health: Terms of Service (last updated 2026-10-07) s.13(b)(ii): cancel before renewal by logging in to my.functionhealth.com, Account Settings, 'Change/Cancel Membership', or by emailing hello@functionhealth.com; cancellation generally takes effect at the end of the billing cycle and access continues until then. s.13(e)(ii): full refund if cancelled within 48 hours of the initial purchase and no specimen has been collected; after that the subscription and all renewals are nonrefundable, with no prorated refund for unused tests. Unused included tests expire at the end of each subscription period (s.13(b)(iii)). FAQ: no pauses; 'Function does not offer refunds for prior payments.' InsideTracker: Help center: cancel any time via Orders > Manage Subscription > Cancel subscription; access continues until membership expires (one year from activation), with a 30-day grace period. Store refund policy: a full refund may be available within 30 days of purchase if blood or DNA testing has not been completed, by request to support@insidetracker.com; purchases after 30 days are final. Auto-renewal terms are not stated in the help articles, refund policy or store terms of service loaded.

Can Function Health or InsideTracker prescribe treatment?

Function Health: no, testing and insights only. InsideTracker: no, testing and insights only.

Which is available in more states?

Function Health: 48 states. InsideTracker: all 50 states and DC.

Sources

Regulatory and primary sources

  1. Function Health: Function Health pricing (seen 2026-11-05) ↗
  2. Function Health: Function Health FAQ ↗
  3. Function Health: Function Health Terms of Service (last updated 2026-10-07) ↗
  4. Function Health: Function Health homepage ↗
  5. Function Health: Function Health - Wikipedia ↗
  6. Function Health: Function Health on Trustpilot (read 2026-11-05) ↗
  7. Function Health: Function Health sues Superpower Health (JD Supra; search snippet) ↗
  8. Function Health: Function sues Superpower (Athletech News, 2026-02-05) ↗
  9. InsideTracker: InsideTracker store ↗
  10. InsideTracker: InsideTracker refund policy ↗
  11. InsideTracker: InsideTracker store terms of service (Segterra, Inc.) ↗
  12. InsideTracker: InsideTracker category testing ↗
  13. InsideTracker: Where and what products can I test with InsideTracker? ↗
  14. InsideTracker: How do I cancel my membership? ↗
  15. InsideTracker: InsideTracker Membership help category ↗
  16. InsideTracker: Before You Buy help category (HSA/FSA) ↗
  17. InsideTracker: How to get started with InsideTracker (PDF) ↗
  18. InsideTracker: BBB profile: Inside Tracker ↗
  19. InsideTracker: InsideTracker on Trustpilot ↗
  20. InsideTracker: InsideTracker homepage (navigation only; For Enterprise marked New) ↗
  21. Lindy Health clinic scoring rubric ↗