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Lab testing

Function Health

Comprehensive lab-testing membership with MD review of every biomarker

Reviewed by Designing Longevity Editorial · last fact-checked May 1, 2026

3.9

out of 5

No financial relationship with Function Health. Editorial inclusion only.

Visit Function Health

Verdict in one glance

Best for

  • Longevity-curious users wanting baseline lab data

    Function provides the broadest panel-per-dollar in DTC lab testing. For users building their first comprehensive biomarker baseline, this is the default starting point.

  • HSA/FSA-eligible users

    The $365/year membership becomes meaningfully cheaper at ~$240-$275 effective with HSA/FSA after pre-tax savings.

Look elsewhere if

  • Users who want real-time clinician interaction

    Function provides written notes and structured recommendations; not real-time clinician chat or video. For interactive coaching, look at Marek Health or a longevity-clinic alternative.

  • Users focused specifically on biological-age testing

    Function includes a biological age calculation but is not built around it. Tally Health is purpose-built for epigenetic age testing.

Our take

Function Health is our top pick in DTC lab-testing-for-longevity. The $365/year price is genuinely competitive for two annual full panels with MD review of every biomarker, the panel breadth is among the largest in the category (160+ tests, 100+ biomarkers per draw), and Mark Hyman as clinical face plus the recent $298M raise at $2.5B valuation provide unusual operational depth for a DTC lab service. Counterweights are real but manageable: NOT Accredited, recurring complaints about customer-support response time and unclear add-on pricing. For most readers wanting comprehensive lab-testing context for longevity decisions, this is the default recommendation.

Pros

  • $365/year ($30/month equivalent) is genuinely competitive for the panel size
  • 160+ tests covering 100+ biomarkers per draw, urinalysis included as baseline
  • Licensed clinician reviews every biomarker with personalized written notes
  • 4.3/5 across roughly 1,009 reviews with no fraud notice
  • HSA/FSA eligible (25-35% effective pre-tax discount)
  • Co-founded by Dr. Mark Hyman; $298M Series B at $2.5B valuation in November 2025

Cons

  • NOT Accredited; BBB profile carries complaint pattern about unclear pricing and refunds
  • Customer-support response time is recurring complaint theme
  • Add-on tests (GRAIL Cancer, brain health, etc.) priced separately and can surprise users
  • No real-time clinician access; written notes only

Pricing

$365/year (~$30/month) for two semi-annual full panels

Turnaround

Lab draw scheduled at any Quest or partner location; 7-14 days for results

States served

All 50

Last verified

May 1, 2026

What Function Health says, and what we found

The provider's own marketing claims, paired with our verdict. Color-coded so you can scan: green for verified, amber for stated-but-unconfirmed, violet for context.

VerifiedPricing

Confirmed. Lowered from $499/year to $365/year in November 2025. Single-tier membership.

Function Health membership is $365/year and includes 160+ lab tests with clinician review.

Function Health pricing page · captured May 1, 2026 · source

Rubric breakdown

How this is scored

Licensure

20% weight
4.0/5

Active state license, no recent disciplinary actions, no FDA enforcement.

Function operates as a licensed medical lab service partnering with national lab networks (Quest Diagnostics) for blood-draw fulfillment. No on Function Health verified against the FDA warning-letter database at capture date.

What we verified (2)

  • No FDA warning letter on Function Health

    Federal database

    Checked May 1, 2026 · source

  • Function Health Inc., Austin TX

    Business filing

    Austin-based. $298M Series B raise at $2.5B valuation announced November 19, 2025; co-founded by Dr. Mark Hyman.

    Checked May 1, 2026 · source

Accreditation

20% weight
3.0/5

PCAB, LegitScript, NABP, USP <797> stack.

Function Health is NOT Accredited. The BBB profile exists in the medical-lab category for the Austin entity. Lab partnerships rely on the underlying lab networks (Quest, etc.) carrying the relevant CLIA certifications, which is the appropriate accreditation infrastructure for this category.

What we verified (2)

  • BBB profile, NOT Accredited

    Accreditation

    Medical-lab category in Austin TX. NOT Accredited at capture date.

    Checked May 1, 2026 · source

  • CLIA-certified lab network for blood-draw fulfillment

    Underlying lab certification

    Function partners with Quest Diagnostics (CLIA-certified) for blood draws. The lab certification stack lives at the lab partner level.

    Checked May 1, 2026

Transparency

20% weight
4.5/5

CoAs, ingredient sourcing, formulation disclosure.

Pricing is published flatly at $365/year with no membership tiers (a recent simplification, lowered from $499 in November 2025). Test panel composition is public, biomarker counts disclosed, and the company has been transparent about its $2.5B valuation and funding history. Single-tier membership removes a common point of pricing confusion.

What we verified (2)

  • Single-tier $365/year pricing published

    Pricing transparency

    Lowered from $499/year to $365/year ($1/day) in November 2025. HSA/FSA eligible.

    Checked May 1, 2026 · source

  • Biomarker panel composition published

    Care-model transparency

    160+ tests across two semi-annual blood draws covering 100+ biomarkers each. Add-on tests (GRAIL Cancer, brain health, environmental toxins) priced separately and disclosed.

    Checked May 1, 2026 · source

Product quality

15% weight
4.0/5

Independent test results, recall history, supply-chain controls.

Extensive panel size (160+ tests, 100+ biomarkers per draw) is among the largest in DTC lab testing. Licensed clinician reviews every biomarker and provides written notes organized by strengths, areas to watch, and specific recommendations. Urinalysis included as baseline (uncommon in cohort competitors).

What we verified (3)

  • 160+ tests across two semi-annual draws

    Panel breadth

    Checked May 1, 2026 · source

  • Clinician review of every biomarker

    Care model

    Licensed clinician writes per-biomarker notes organized into structured summary. Mark Hyman as co-founder and clinical face of the service.

    Checked May 1, 2026

  • Urinalysis included as baseline

    Panel breadth

    Uncommon in DTC lab testing. Function treats urinalysis as a non-negotiable baseline test.

    Checked May 1, 2026

Pricing

15% weight
4.0/5

Value within the category, no surprise fees, refund policy.

$365/year ($30/month equivalent) for the comprehensive panel is genuinely competitive in DTC lab testing. The November 2025 price reduction from $499 to $365 makes the math meaningfully better than most cohort competitors. HSA/FSA eligibility provides a 25-35% effective pre-tax discount.

What we verified (2)

  • $365/year flat-fee pricing

    Pricing transparency

    Checked May 1, 2026 · source

  • HSA/FSA eligible

    Coverage

    Pre-tax pathway provides ~25-35% effective discount depending on tax bracket.

    Checked May 1, 2026

Customer service

10% weight
3.5/5

Refund policy, support quality, complaint history.

4.3/5 across roughly 1,009 reviews with no fraud notice. Recurring negatives across platforms cluster on customer-support response time and unclear pricing of add-on tests rather than panel quality. The $1,009 review sample is large enough to be informative.

What we verified (2)

  • Trustpilot 4.3/5 across roughly 1,009 reviews

    External review

    No suspected-fraudulent-review notice on the page at capture date. Negatives concentrate on customer-support response and unclear add-on test pricing.

    Checked May 1, 2026 · source

  • BBB complaint pattern

    Complaint history

    complaints describe unclear pricing, hidden fees, and refund difficulties. Complaint volume on the BBB profile is meaningful enough to count as a real signal alongside the stronger picture.

    Checked May 1, 2026 · source

Public reviews

What we found across third-party review platforms. These are external sentiment signals, not our scoring inputs.

Trustpilot

4.3/5 across roughly 1,009 reviews. No suspected-fraudulent-review notice on the page at capture date. Positives cluster on panel breadth and ease of access; negatives concentrate on customer-support response time and add-on test pricing.

Captured May 1, 2026Source

Better Business Bureau

NOT Accredited. Medical-lab category in Austin TX. Complaints describe unclear pricing, hidden add-on fees, and refund difficulties. The complaint pattern is meaningful enough to count as a counterweight to the signal.

Captured May 1, 2026Source

What to expect

  1. 1

    Membership signup

    5 min

    Single $365/year tier. HSA/FSA accepted at checkout for pre-tax payment.

  2. 2

    Schedule blood draw

    1-2 weeks until appointment

    Function partners with Quest Diagnostics nationally; book a draw at any Quest location at no additional cost.

  3. 3

    Lab results + clinician review

    7-14 days

    Results return in 7-14 days. A licensed clinician reviews every biomarker and writes personalized notes organized by strengths, areas to watch, and recommendations.

  4. 4

    Second draw at month six

    Ongoing

    Membership covers two full panels per year. Schedule the second draw at month six for trend tracking.

Accreditations

State pharmacy/clinic license

Verified · May 1, 2026

Frequently asked

Is Function Health legit?

Yes. Function Health is co-founded by Dr. Mark Hyman and raised a $298M Series B at a $2.5B valuation in November 2025 (led by Redpoint Ventures with a16z, Battery, NFDG). It runs an established lab-testing membership model partnered with Quest Diagnostics for nationwide blood draws, with a licensed clinician reviewing every biomarker. 4.3/5 across roughly 1,009 reviews with no fraud notice. No ; no active manufacturer lawsuits. The honest counterweights: NOT Accredited, BBB complaints recurrently flag unclear pricing on add-on tests (GRAIL Cancer test, brain-health imaging, etc.) and customer-support response time. For most users wanting comprehensive biomarker testing for longevity context at a transparent price, Function is our top pick in lab testing.

How is Function different from a regular doctor visit with lab work?

Function provides a comprehensive panel that's broader than what most insurance-covered annual physicals include (most run roughly 20-40 standard markers; Function covers 100+ per draw). The clinician review is written rather than live, which is a tradeoff: more depth and structure, less interactive. Function is a complement to a primary-care relationship, not a replacement; if you have a chronic condition or need real-time clinician interaction, see your PCP.

Does Function accept insurance?

No commercial insurance, but the $365/year membership is HSA/FSA eligible, which gives you a 25-35% effective pre-tax discount depending on your tax bracket. The membership covers the lab draws, the panel processing, and the clinician review; there are no separate per-test charges within the standard panel.

What about add-on tests?

Function offers add-on tests beyond the standard panel: GRAIL multi-cancer early-detection test, brain-health imaging, environmental toxin panels, etc. These are priced separately from the membership and can run several hundred to over $1,000 each. complaints recurrently flag that add-on pricing surprises users post-membership; read the add-on catalog before assuming the $365 membership covers everything you might want.

Is the clinician review live or written?

Written. A licensed clinician reviews each biomarker and provides personalized notes organized by strengths, areas to watch, and recommendations. This is structured and detailed but not real-time interactive. For interactive clinician access, you'd pair Function with a primary-care relationship, a longevity clinic, or a coaching service like Marek Health.

How does Function compare to Tally Health?

Different products. Function is comprehensive lab testing across 100+ biomarkers per draw, twice a year, with MD review for $365/year. Tally Health is specifically epigenetic biological age testing (cheek-swab DNA methylation) plus supplements, at $129-$159/month membership. Function is broader; Tally is purpose-built for the biological-age question. They're complementary rather than competing.

Update history

Every meaningful change to this profile, with a date stamp. We don't silently re-score.

  1. May 1, 2026

    Initial published profile. Sources HEAD-checked at publish time. Score (3.9) reflects the strongest panel-per-dollar value in DTC lab testing weighed against the complaint pattern around add-on pricing and refunds. Top pick in the lab-testing category.

Compare Function Health head-to-head

Stuck choosing? We pick a winner per use case in the comparisons below.

vs InsideTracker

Independent head-to-head: Function Health vs InsideTracker. 100+ biomarkers at $365/year vs 54 plus optional DNA at $149 membership.

See verdict

vs Tally Health

Independent head-to-head: Function Health vs Tally Health. A 100+ biomarker panel with MD review vs epigenetic biological-age testing.

See verdict

Reviewed by Designing Longevity Editorial. Last fact-checked May 1, 2026.

Spot something out of date or wrong? Let us know and we'll re-check.

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