Function Health's product is testing - 100+ biomarkers a year for a flat fee, in the US. That's a genuinely great input. Cuilvor's product is the reading: it ingests biomarkers from anywhere (Function included, but also the NHS, Superpower, Everlywell, your local hospital - via PDF or even a screenshot), trends them across every panel you've ever taken, and folds them into a weekly coaching review alongside your sleep and food.
UK angle worth knowing: Function doesn't operate here. Cuilvor is lab-agnostic by design - NHS results work day one.
| Cuilvor | Function Health | |
|---|---|---|
| What it is | AI coach across labs + lifestyle data | Subscription blood-testing service (US) |
| Blood testing | ✗ Bring results from any lab | ✓ 100+ biomarkers/yr included |
| Reads results from ANY lab | ✓ PDF or screenshot - NHS included | ✗ Its own panels |
| Trends across years & labs | ✓ Every panel, one timeline | ◐ Within Function's history |
| Sleep, food, training context | ✓ Core of the weekly review | ✗ Labs only |
| Available in the UK | ✓ Yes | ✗ US only |
| Coaching | ✓ Weekly written review, 2 changes max | ◐ Clinician-written summaries per panel |
| Price | Own AI key - app TBC | ~$499/yr membership |
No - Cuilvor doesn't draw blood. It reads results from whatever service or hospital you use and turns them into trends and plain-English flags for your GP.
Yes - screenshots from the NHS app work, since the NHS often doesn't allow PDF downloads. Every biomarker is extracted, flagged against the report's own ranges, and trended.
It explains what a marker does and flags what's worth a GP conversation. It never diagnoses - that line is deliberate and hard-coded into the coaching rules.
That's arguably the ideal stack in the US: Function draws and measures, Cuilvor reads, trends and coaches alongside your lifestyle data.
Your data is already telling the story. Cuilvor reads it.
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