Function Health vs Marek Diagnostics for CGM Diagnostics (2026): Cost & Which Wins

Best for Function Health

Users who want deep, longitudinal diagnostic data to guide their own health decisions or share with their care providers.

Best for Marek Diagnostics

Users who want a more optimization-oriented lab comparison than general consumer bloodwork platforms.

Biggest difference

Telehealth-first vs Telehealth-first access model.

Decision helper

Function Health: Function publicly states membership is $365/year for 160+ lab tests per year. Marek Diagnostics: Marek Diagnostics shows a visible starting price of $79 per package, but deeper pricing detail is not fully public on the reviewed pages.

Notable limitations

Function Health: Function Health does not prescribe or deliver therapies — it is a diagnostic platform, not a treatment provider.

Marek Diagnostics: Some final pricing still depends on consult review, location, or service customization.

Publicly verified care model notes

Function Health: The reviewed public pricing article focuses on membership and results experience rather than a required clinician consult flow.

Marek Diagnostics: A mandatory consult step was not clearly listed on the reviewed homepage.

Function Health: Lab testing is included or clearly signaled in the visible program structure.

Marek Diagnostics: Lab testing is signaled in the visible care model.

Function Health: Cancellation details were not clearly listed on the reviewed public pricing article.

Marek Diagnostics: No clear cancellation or refund language was surfaced on the reviewed official pages.

Transparency notes

Function Health: The reviewed Function page explicitly says 'No insurance, transparent pricing'.

Marek Diagnostics: Insurance, HSA, or FSA handling was not fully verified from the reviewed official pages.

Function Health: Medication changes, shipping, or higher treatment tiers may still change the final bill.

Marek Diagnostics: Medication changes, shipping, or premium tiers may still change the final bill.

Data snapshot — pricing sourced from public provider rates

Last updated

Apr 28, 2026

Providers analyzed

Price range

$499 vs $79

Methodology

How we collect data

Disclosure

Affiliate relationships

Function Health

Established operator

A diagnostic-first membership that covers 100+ biomarkers with physician review — built for proactive health monitoring rather than treatment.

Function Health is a comprehensive lab testing membership that gives members access to 100+ biomarker panels reviewed by physicians, designed to surface health insights that standard annual exams typically miss.

Wellness LabsSupplementsCGM DiagnosticsSleep Optimization

Starting price

$499

per package

Service availability

Telehealth available

Labs included

Telehealth nationwide

Users who want deep, longitudinal diagnostic data to guide their own health decisions or share with their care providers.

Health-focused individuals who feel standard annual bloodwork is insufficient for proactive longevity monitoring.

See Pricing Details Check Provider

Marek Diagnostics

Official website reviewed

lab-ordering and diagnostics brand built for detailed biomarker testing and optimization workflows

Marek Diagnostics is a lab-ordering and diagnostics brand built for detailed biomarker testing and optimization workflows.

Wellness LabsCGM Diagnostics

Starting price

$79

per package

Service availability

Telehealth available

Labs included

National diagnostics platform

Users who want a more optimization-oriented lab comparison than general consumer bloodwork platforms.

Visitors already comparing Marek-linked hormone and diagnostics ecosystems.

See Pricing Details Check Provider

Signal	Function Health	Marek Diagnostics
CGM Diagnostics price	$499	$79
Price range	$499	$79
Care model	Telehealth-first	Telehealth-first
Membership model	Membership required	No membership required
Availability	1 states + telehealth	21 states + telehealth
Transparency score	4/5	4/5
Limitations	Function Health does not prescribe or deliver therapies — it is a diagnostic platform, not a treatment provider.	Some final pricing still depends on consult review, location, or service customization.

Winner by category

Best for price

Marek Diagnostics currently shows the lower visible cgm diagnostics price anchor.

Best for convenience

Function Health looks easier to use for shoppers prioritizing access and lower-friction logistics.

Best for service variety

Function Health currently offers the broader service stack around this category.

Best for beginners

Marek Diagnostics looks friendlier for first-time shoppers who want simpler onboarding.

Which should you choose?

Choose Marek Diagnostics if your goal is the stronger overall mix of price clarity and service fit in cgm diagnostics. Choose Function Health if its access model or care structure is closer to how you actually want to buy this treatment.

Questions to ask before choosing

Specific to CGM Diagnostics programs — the service being compared here.

1What is included in the base membership price versus billed additionally?
2How frequently are labs and provider consultations included, and at what cadence?
3What is the cancellation policy if the program does not meet my expectations?
4How does the provider handle monitoring if my biomarkers fall outside the target range?

Shopper intent shortcuts

Cheapest likely scenario

Marek Diagnostics

Marek Diagnostics currently shows the lower visible cgm diagnostics price anchor, but the real bill still depends on labs, consults, and membership rules.

Fastest access

Function Health

Function Health looks better for low-friction access if you care most about telehealth and a simpler booking path.

Transparent pricing

Function Health

Function Health currently publishes the cleaner pricing trail for cgm diagnostics.

More medically supervised

Verify both directly

Both providers need direct verification on clinician review, labs, and follow-up cadence.

FAQ

CGM Diagnostics comparison questions

Which provider is cheaper for cgm diagnostics: Function Health or Marek Diagnostics?

Marek Diagnostics currently shows the lower visible cgm diagnostics price anchor, though the real comparison still depends on membership, labs, and consult structure.

Which provider looks stronger for cgm diagnostics overall?

Marek Diagnostics currently looks stronger on the service-specific comparison because of its current blend of pricing, access model, and overall provider fit.

Why break this out into a cgm diagnostics comparison page?

Because buyers often want a narrower answer than a full-provider comparison when they are only shopping one treatment category.

Related paths

Next comparison clicks

Full provider comparison

Zoom back out to the all-services comparison page.

Function Health CGM Diagnostics

Open the provider's service-specific review.

Marek Diagnostics CGM Diagnostics

Open the provider's service-specific review.

CGM Diagnostics guide

Compare the broader service category.

CGM Diagnostics calculator

Model likely spend for this category.

Lifeforce CGM Diagnostics

Compare another provider in this treatment category.

Prenuvo CGM Diagnostics

Compare another provider in this treatment category.

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Function Health Membership Cost: What You Are Actually Paying For

Read related editorial context.

Methodology and disclaimer

Updated Apr 28, 2026

This service comparison page is generated from provider overlap, current price anchors, convenience signals, and treatment-specific fit data. It is designed to be useful for category research, not medical decision-making.

Informational only. Longevity Costs publishes provider research, public pricing context, and comparison summaries for informational purposes only. The site is not a medical provider, clinic, pharmacy, or emergency service. Nothing on this page is medical advice, diagnosis, treatment guidance, or a claim that a therapy is proven, guaranteed, or appropriate for you. Consult a licensed medical professional before starting or changing any therapy.

Source

Public provider websites, rate sheets, and documented offers.

Verification

Verify final pricing directly with the provider before booking.

Cadence

Data is reviewed and updated on a rolling basis.

Sources

Function membership article

Checked 2026-05-06 · Confidence 84%

Annual membership pricing and insurance posture.

Sources

Marek Diagnostics homepage

Checked 2026-05-06 · Confidence 68%

Official homepage reviewed for care model and visible public positioning.

Publicly verified care model notes

Function Health: The reviewed public pricing article focuses on membership and results experience rather than a required clinician consult flow.

Marek Diagnostics: A mandatory consult step was not clearly listed on the reviewed homepage.

Function Health: Lab testing is included or clearly signaled in the visible program structure.

Marek Diagnostics: Lab testing is signaled in the visible care model.

Function Health: Cancellation details were not clearly listed on the reviewed public pricing article.

Marek Diagnostics: No clear cancellation or refund language was surfaced on the reviewed official pages.

Transparency notes

Function Health: The reviewed Function page explicitly says 'No insurance, transparent pricing'.

Marek Diagnostics: Insurance, HSA, or FSA handling was not fully verified from the reviewed official pages.

Function Health: Medication changes, shipping, or higher treatment tiers may still change the final bill.

Marek Diagnostics: Medication changes, shipping, or premium tiers may still change the final bill.

Signal

Function Health

Marek Diagnostics

CGM Diagnostics price

$499

$79

Price range

$499

$79

Care model

Telehealth-first

Membership model

Membership required

No membership required

Availability

1 states + telehealth

21 states + telehealth

Transparency score

4/5

Limitations

Function Health does not prescribe or deliver therapies — it is a diagnostic platform, not a treatment provider.

Some final pricing still depends on consult review, location, or service customization.

Winner by category

Best for price

Marek Diagnostics currently shows the lower visible cgm diagnostics price anchor.

Best for convenience

Function Health looks easier to use for shoppers prioritizing access and lower-friction logistics.

Best for service variety

Function Health currently offers the broader service stack around this category.

Best for beginners

Marek Diagnostics looks friendlier for first-time shoppers who want simpler onboarding.

Questions to ask before choosing

Specific to CGM Diagnostics programs — the service being compared here.

1What is included in the base membership price versus billed additionally?

2How frequently are labs and provider consultations included, and at what cadence?

3What is the cancellation policy if the program does not meet my expectations?

4How does the provider handle monitoring if my biomarkers fall outside the target range?

Shopper intent shortcuts

Cheapest likely scenario

Marek Diagnostics

Marek Diagnostics currently shows the lower visible cgm diagnostics price anchor, but the real bill still depends on labs, consults, and membership rules.

Fastest access

Function Health

Function Health looks better for low-friction access if you care most about telehealth and a simpler booking path.

Transparent pricing

Function Health

Function Health currently publishes the cleaner pricing trail for cgm diagnostics.

More medically supervised

Verify both directly

Both providers need direct verification on clinician review, labs, and follow-up cadence.