Vial Confidence Comparison
VIAL
VIALFunction Health vs Marek Diagnostics
Same category. Different operational transparency.
Telehealth Platform
81/ 100
Vial Score
View full report →Lab / Diagnostic76/ 100
Vial Score
View full report →Signal
Pharmacy Disclosure
Do they name their pharmacy partner?
✕No pharmacy partner named
✕No pharmacy partner named
Physician Oversight
Are prescribing clinicians named?
✓Named clinical leadership
•Team described in aggregate
Pricing Transparency
Is pricing shown before signup?
•Pricing behind membership
✕Pricing not disclosed
Federal Enforcement History
Any FDA, DEA, or OIG actions?
✓No federal actions found
✓No federal actions found
State Availability
How widely is care available?
✓48 states
•40 states
Membership Model
Is a paid membership required?
•Paid membership required
✓No membership required
Data & Privacy
Any reported HIPAA breaches?
✓No breaches on record
✓No breaches on record
Higher Vial Score
Function Health
Leads on physician oversight, pricing, and state availability.
Lower Vial Score
Marek Diagnostics
Gaps in pharmacy disclosure and pricing.
Updated October 1, 2026
Scores based on operational, compliance, and transparency signals tracked by Vial.
Biggest Differences
- Physician disclosureFunction Health publishes named clinical leadership you can research before signing up; Marek Diagnostics describes its clinical team in aggregate without identifying specific physicians.
- Vial Score gap (5 points)Function Health scores 81/100 to Marek Diagnostics's 76/100, a 5-point spread driven by the differences below.
Provider A
Function Health
DeliveryTelehealth Only
HQSan Francisco, CA
Services: Metabolic Health, Longevity Protocols, Cognitive Performance +2
Provider B
Marek Diagnostics
DeliveryTelehealth Only
HQScottsdale, AZ
Services: TRT, HRT, Metabolic Health +1
Comparison based on public federal and state records including NPI Registry, FDA enforcement database, and PCAB accreditation directory. Updated weekly. Not a medical endorsement.
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This page evaluates compliance signals, not clinical outcomes. Consult a licensed physician before starting any therapy, medication, or treatment. Vial does not provide medical advice.