Which is better: Function Health, Superpower or InsideTracker?

InsideTracker ranks first on our rubric (10.0/10). Fully verified scores rank ahead of provisional ones, because a provisional score leaves out a criterion we could not check. Function Health: 9.8/10. Superpower: 9.6/10. The score covers price transparency, labs, availability, cancellation and treatment range, not lab accuracy or clinical outcomes.

Superpower has the lowest published starting price ($199/yr). Function Health starts at $365/yr; InsideTracker starts at $489 first year. Follow-up tests, add-ons and any medication are extra; see the price section for what each membership includes.

Which is available in the most states?

InsideTracker (all 50 states and DC). Function Health: 48 states. Superpower: 42 states.

Function Health vs Superpower vs InsideTracker (2026)…

Q: Can any of them prescribe treatment?

Superpower offers prescriptions after testing (Superpower: Compounded hormones (unspecified), Compounded peptides (unspecified), GLP-1 medications (agents not named), Sermorelin (per Business Insider report)). Function Health and InsideTracker are testing and insights only.

Q: Which is easiest 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. Superpower: Membership Agreement (Last Updated and Effective 9.15.2026) s.14: cancel any time, including during the initial term, via the cancellation flow in the user account or by emailing concierge@superpower.com; cancellation takes effect on receipt and stops the next renewal, with no cancellation fee. 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.

The short answer

Choose InsideTracker if…

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

Visit insidetracker.com ↗

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.

Visit functionhealth.com ↗

Choose Superpower if…

Cost-conscious adults wanting an annual baseline lab panel plus optional access to prescriptions through the same app, and who accept that medication prices are not published.

Visit superpower.com ↗

Ranks first: InsideTracker, 10.0/10.
Lowest starting price: Superpower, $199/yr.
Widest availability: InsideTracker, all 50 states and DC.
Prescribes after testing: Superpower.

Side-by-side comparison

	Function Health	Superpower	InsideTracker
Overview
Our score	9.8 / 10	9.6 / 10	10.0 / 10
Founded	Austin, TX	2023	2009 · Cambridge, MA
Starting price	$365/yr	$199/yr	$489 first year
Primary service	Bloodwork & longevity	Bloodwork & longevity	Bloodwork & longevity
All services	Bloodwork	Bloodwork	Bloodwork
Treatments offered	None (testing only)	Compounded hormones (unspecified), Compounded peptides (unspecified), GLP-1 medications (agents not named), Sermorelin (per Business Insider report), Tesamorelin (per Business Insider report), SS-31 (per Business Insider report), BPC-157 (pre-order, target ship late November 2026), TB-500 (pre-order, target ship late November 2026), MOTS-c (pre-order, target ship late November 2026)	None (testing only)
Care
Consult model	Unconfirmed	Asynchronous (questionnaire + messaging)	Unconfirmed
Prescriber	Unconfirmed	MD/DO + NP/PA	MD/DO
Labs	Included	Included	Included
Insurance	Cash pay	Cash pay	Unconfirmed
Availability	48 states	42 states	50 states + DC
Terms
Cancellation	Self-serve online	Self-serve online	Self-serve online
Trustpilot	4.5 / 5 (3,118 reviews)	4.4 / 5 (343 reviews)	4 / 5 (616 reviews)
Regulatory / legal record	None found	Function Health, Inc. v. Superpower Health, Inc., No. 2:26-cv-00810 (C.D. Cal., filed 2026-01-26): false-advertising and unfair-competition suit over Superpower's '100+ biomarkers' and comparative claims	None found
	Visit ↗	Visit ↗	Visit ↗

* Provisional score: one or two criteria could not be verified from the company’s published pages.

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.

Superpower

Homepage (seen 2026-11-05): 'Starts at $199/year' ('$0.55/day'); includes one comprehensive blood draw per year, which Superpower describes as '100+ biomarkers' (its own comparison pages count 103: 57 distinct and 46 calculated), biological age and health scores, action plan, AI and on-demand care team. New members are offered a complimentary follow-up test (stated value $99). An at-home draw is $119 extra. Follow-up tests, add-on tests and prescriptions are priced separately; the homepage says 'Pricing may vary for members in New York and New Jersey' and the comparison pages state +$200 there ($399/yr). Peptides page (seen 2026-11-05): BPC-157 and TB-500 $149/mo, MOTS-c $199/mo, taken as paid pre-orders with a target ship date of late November 2026; the peptide plan includes a 40+ biomarker blood test and membership.

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 your results

Function Health

Testing and insights only. No prescriptions; results are for you to take to your own clinician.

Superpower

Prescriptions available after testing: Compounded hormones (unspecified), Compounded peptides (unspecified), GLP-1 medications (agents not named), Sermorelin (per Business Insider report), Tesamorelin (per Business Insider report), SS-31 (per Business Insider report), BPC-157 (pre-order, target ship late November 2026), TB-500 (pre-order, target ship late November 2026), MOTS-c (pre-order, target ship late November 2026). Prescribers: MD/DO + NP/PA.

InsideTracker

Testing and insights only. No prescriptions; results are for you to take to your own clinician. 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.'

Superpower

Membership Agreement (Last Updated and Effective 9.15.2026) s.14: cancel any time, including during the initial term, via the cancellation flow in the user account or by emailing concierge@superpower.com; cancellation takes effect on receipt and stops the next renewal, with no cancellation fee. Auto-renews at the then-current non-promotional rate. Homepage: membership stays active through the end of the paid year. s.14(a) offers a one-time 100% refund of the initial-term base fee if requested by the earlier of 7 days after results delivery or 45 days after start, but the FAQ says 'Superpower does not offer refunds at this time.' Prescription products are not refundable.

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.

Superpower

41 states + DC. FAQ and comparison page: not yet available in AK, AR, HI, LA, MS, ND, RI, SD, WY. FAQ: 'Superpower can write a prescription in all states where we're live, except Alabama and West Virginia'; the peptides page says the same for peptide shipping. NY/NJ membership is $200 higher.

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

10.0Strong

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

9.8Strong

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.

#3

Superpower

9.6Strong

Cost-conscious adults wanting an annual baseline lab panel plus optional access to prescriptions through the same app, and who accept that medication prices are not published.

Starting price: $199/yr
Consult model: Asynchronous (questionnaire + messaging)
Prescriber: MD/DO + NP/PA
Labs: Included
Insurance: Cash pay
Availability: 42 states
Cancellation: Self-serve online
Founded: 2023

Pricing

Homepage (seen 2026-11-05): 'Starts at $199/year' ('$0.55/day'); includes one comprehensive blood draw per year, which Superpower describes as '100+ biomarkers' (its own comparison pages count 103: 57 distinct and 46 calculated), biological age and health scores, action plan, AI and on-demand care team. New members are offered a complimentary follow-up test (stated value $99). An at-home draw is $119 extra. Follow-up tests, add-on tests and prescriptions are priced separately; the homepage says 'Pricing may vary for members in New York and New Jersey' and the comparison pages state +$200 there ($399/yr). Peptides page (seen 2026-11-05): BPC-157 and TB-500 $149/mo, MOTS-c $199/mo, taken as paid pre-orders with a target ship date of late November 2026; the peptide plan includes a 40+ biomarker blood test and membership.

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

What we like

Lowest published entry price of the three bloodwork services reviewed ($199/yr with one lab panel)
Clinician team includes physicians and nurse practitioners and can prescribe
Self-serve cancellation in account or by email
HSA/FSA eligible

Watch out for

Only one blood test per year included; follow-up testing costs extra (one complimentary follow-up offered to new members)
Not available in 9 states (AK, AR, HI, LA, MS, ND, RI, SD, WY); no prescribing in AL or WV; NY/NJ priced at $399/yr
Most prescription prices are not listed publicly; only the pre-order peptides show prices
Sells pre-orders for BPC-157, TB-500 and MOTS-c, unapproved peptides compounded under a 2026 HHS enforcement discretion policy, before they ship

Treatments offered

Compounded hormones (unspecified)Compounded peptides (unspecified)GLP-1 medications (agents not named)Sermorelin (per Business Insider report)Tesamorelin (per Business Insider report)SS-31 (per Business Insider report)BPC-157 (pre-order, target ship late November 2026)TB-500 (pre-order, target ship late November 2026)MOTS-c (pre-order, target ship late November 2026)

Cancelling

Membership Agreement (Last Updated and Effective 9.15.2026) s.14: cancel any time, including during the initial term, via the cancellation flow in the user account or by emailing concierge@superpower.com; cancellation takes effect on receipt and stops the next renewal, with no cancellation fee. Auto-renews at the then-current non-promotional rate. Homepage: membership stays active through the end of the paid year. s.14(a) offers a one-time 100% refund of the initial-term base fee if requested by the earlier of 7 days after results delivery or 45 days after start, but the FAQ says 'Superpower does not offer refunds at this time.' Prescription products are not refundable.

Where it is available

41 states + DC. FAQ and comparison page: not yet available in AK, AR, HI, LA, MS, ND, RI, SD, WY. FAQ: 'Superpower can write a prescription in all states where we're live, except Alabama and West Virginia'; the peptides page says the same for peptide shipping. NY/NJ membership is $200 higher.

On the public record

2026-01 Function Health, Inc. v. Superpower Health, Inc., No. 2:26-cv-00810 (C.D. Cal., filed 2026-01-26): false-advertising and unfair-competition suit over Superpower's '100+ biomarkers' and comparative claims. No ruling, settlement or dismissal found as of 2026-11-05. Source ↗

Two-way comparisons

Function Health vs Superpower Function Health vs InsideTracker Superpower vs InsideTracker Compare with any other company

Function Health, Superpower vs InsideTracker

The short answer

Side-by-side comparison

Price: what you actually pay

Function Health

Superpower

InsideTracker

What happens after your results

Function Health

Superpower

InsideTracker

Cancelling and refunds

Function Health

Superpower

InsideTracker

Where each is available

Function Health

Superpower

InsideTracker

Full breakdown of each

Pricing

What we like

Watch out for

Pricing

What we like

Watch out for

Pricing

What we like

Watch out for

Two-way comparisons

Function Health vs Superpower vs InsideTracker: FAQ

Which is better: Function Health, Superpower or InsideTracker?

Which is cheapest?

Can any of them prescribe treatment?

Which is available in the most states?

Which is easiest to cancel?

Sources

Regulatory and primary sources