Function Health vs SmarterBlood
An honest comparison for anyone researching blood test analysis services — covering price, geography, biomarkers, AI explanations, and who each platform actually serves.
The Quick Answer
Function Health is a US-based membership service that ships you a blood test kit, arranges a blood draw, and provides AI-driven analysis of 100+ biomarkers for USD $499 per year. It is well-designed, comprehensive, and not available in Australia.
SmarterBlood works differently: you upload the PDF from your existing Australian blood test — ordered by your GP and funded by Medicare — and the AI explains every marker in plain English, builds interactive trend graphs, and generates doctor-ready PDF reports. It is free, and it works with tests you already have.
The bottom-line verdict
If you are Australian and have past blood test PDFs: SmarterBlood. If you are American without a doctor ordering tests and want a comprehensive panel handled end-to-end: Function Health.
Geography: The Deciding Factor for Most Australians
Function Health requires a US shipping address to receive the blood-draw kit. The blood draw itself must occur at a US lab partner. Australian residents cannot use Function Health — the platform is explicitly US-only and the logistics do not cross borders.
SmarterBlood was built around the Australian pathology system. Upload a PDF from Laverty, Sullivan Nicolaides, Australian Clinical Labs, Dorevitch, or any Australian pathology provider. Australian reference ranges, Medicare context, and GP-friendly output are built into the platform's design.
Feature-by-Feature Comparison
Each row is rated by which service has the advantage for the specific dimension. “Comparable” means both are similar in that area. All claims are factual and verifiable.
Price
Free for the first one million users. No subscription, no credit card.
USD $499/year (approx. AUD $770+). Annual membership required.
Geographic availability
Available worldwide. Designed specifically for Australian Medicare-funded tests.
United States only. Requires a US address and US shipping for the blood kit.
Test source (how you get blood drawn)
Upload your existing PDF from Laverty, Sullivan Nicolaides, Australian Clinical Labs, or any Australian pathology provider.
Function ships a blood-draw kit to your US address. You attend a draw site in the US.
Number of biomarkers
Analyses whatever is on your existing report — typically 20 to 80 markers from a standard GP panel. Recognises 500+ named markers.
Over 100 biomarkers per draw from a dedicated panel designed by Function.
AI explanations of every marker
Plain-English explanation for every marker, with Australian reference ranges, trend context, and what to discuss with your GP.
AI-driven explanations per marker. Strong educational layer.
Track results over time
Yes — upload past and future tests. Interactive graphs across years. Upload your 2019 test today and see it alongside 2024.
Yes — each annual draw is compared to prior draws. Longitudinal view builds over membership years.
Data ownership and privacy
Data is never sold or used to train AI models. Encrypted at rest and in transit. One-click full delete.
US HIPAA-aligned practices. Data used within Function Health platform.
Doctor referral letter PDF
11 PDF templates including Dear Doctor letters, specialist reports, and a Medicare-eligible test checklist.
Summary reports downloadable. Letter-format GP referral not specifically documented.
Requires Medicare or private health?
No — upload any blood test PDF regardless of how it was funded. No insurance needed.
Not applicable. Function handles the cost of the draw within its US membership fee.
Real Cost Comparison for an Australian
Function Health's USD $499/year converts to approximately AUD $770+ depending on the exchange rate, plus any international transaction fees. It also requires you to be in the United States, so for most Australians the cost is irrelevant — it is simply not available.
In Australia, a standard full blood count and biochemistry panel ordered by your GP is bulk-billed under Medicare — it costs you nothing. SmarterBlood then reads and analyses that PDF for free. The total cost of blood test analysis for most Australians: $0.
Function Health (US)
USD $499/yr membership + US address required + US blood draw logistics
SmarterBlood (Australia)
$0 — upload your existing Medicare-funded blood test PDF
Which Service Fits Your Situation
You are Australian and have existing GP blood test PDFs
Function Health cannot serve you. SmarterBlood reads your existing Australian pathology PDFs and explains every result instantly.
You live in the United States and have no GP ordering tests
Function handles the entire test process — kit, blood draw, and analysis — without needing a doctor referral. SmarterBlood needs an existing PDF.
You want to track 5 years of historical tests you already have
Upload all your past PDFs and get immediate longitudinal graphs. Function can only build history from future annual draws forward.
You want more than 100 markers tested in a single draw
Function's dedicated panel covers 100+ markers by design. Australian GP panels typically cover 20-80 markers depending on what was requested.
You need a report to bring to your Australian GP appointment
SmarterBlood generates Australian-context Dear Doctor letters and specialist reports your GP can act on. Function's reports are designed for US providers.
Caveats Worth Knowing
Neither service replaces your GP
Both Function Health and SmarterBlood are educational tools. Neither provides a diagnosis, treatment recommendation, or prescription. Always discuss out-of-range results with your healthcare provider.
Function Health's 100+ marker panel may include tests you don't need
A broader panel can catch things a focused GP panel misses, but it also generates more borderline results that need investigation. More markers is not always better for your anxiety or your wallet.
SmarterBlood can only analyse what your GP ordered
If your GP only ordered a basic FBC, SmarterBlood can only show you those markers. To get more, ask your GP to expand the panel or order specific tests you are interested in.
Australian reference ranges differ from US ranges
Function Health uses US reference ranges and US lab standards. If you ever access your Function Health report as an Australian, compare cautiously — some normal ranges differ between countries for the same marker.
Related Reading
Already Have an Australian Blood Test?
Upload your existing PDF from Laverty, Sullivan Nicolaides, or any Australian pathology provider. SmarterBlood's AI reads every marker, applies Australian reference ranges, and builds interactive trend graphs — free for the first one million users.
Function Health is a registered trademark of Function Health Inc. SmarterBlood is independent and not affiliated with Function Health Inc. This page is a factual comparison for informational purposes only and is not a substitute for professional medical advice. Always consult your GP or healthcare provider about your blood test results.