Arcaevo vs Function Health: which should you choose?
Function Health offers 100+ markers a year at a strong price in the US. Arcaevo prioritises fewer, higher-evidence markers, fuses them with wearables, and proves your changes worked — so pick Function for maximum US marker breadth, and Arcaevo for interpreted, wearable-fused, EU-hosted testing.
At a glance
| DIMENSION | Arcaevo | Function Health |
|---|---|---|
| Markers | 35–80 (prioritised) | 100+ per year |
| Interpretation | Ranked plan + coach | Clinician notes + flags |
| Wearable fusion | Yes | No |
| Change detection | Your baseline + RCV | Range + flags |
| ‘Did it work?’ loop | Yes | Retest markers |
| Region | Ireland / EU | USA |
| Data residency | EU, never sold | USA |
| Best for | Interpreted EU testing | Max US marker breadth |
The honest take
Function Health has made comprehensive testing genuinely affordable in the US, and the sheer number of markers is impressive. If you're American and want breadth, it's a leading option.
Arcaevo is the European, interpretation-first alternative. We test fewer things on purpose, fuse them with the wearable you already wear, keep your data in the EU, and prove what actually changed — rather than handing you a hundred numbers to parse.
People also ask
Is Function Health available in Ireland or the EU?
Function Health is US-focused. Arcaevo is built for Ireland and the EU, with EU data residency and local fulfilment.
Why does Arcaevo test fewer markers?
We prioritise markers with the strongest outcome evidence and interpret them deeply, rather than maximising count. Fusion and change detection add more signal than extra markers alone.
Does Function fuse wearable data?
No. Wearable fusion is a core Arcaevo differentiator.
See the difference in your own numbers.
Start with a single test — no membership needed.
Order your first test