Zoi

Zoī runs a private preventative-medicine centre at 12 rue Volney in central Paris, selling one-off check-ups rather than treating illness.

Three packages are published with prices: Pulse at 990 euros (90-plus biomarkers, one DEXA scan - a low-dose X-ray that measures bone density and body composition - and a 30-minute doctor consultation), Essential at 3,590 euros, and Signature at 4,990 euros (150-plus biomarkers, eleven functional tests and five imaging exams including cardiac ultrasound and OCT, a scan of the back of the eye).

A fourth tier, Ultimate, is priced on request and adds whole-body MRI carried out with a partner clinic, 200-plus biomarkers and six molecular estimates of biological age.

Every package bundles twelve months of follow-up: an app, a named referring doctor, a medical concierge and two or three review consultations across the year. Paid add-ons include hormonal and imaging panels for women and men at 960 euros each, and repeat DEXA scans at 250 euros.

The site states plainly that the service is not curative and includes no treatment - anything found is referred on to specialists. Zoī says it works in French and English, and that the doctors involved are independent practitioners rather than employees. Open to adults aged 18 and over paying privately.