A single day of medical tests can cost £12,500 — and some people consider it money well spent. Preventicum, a discreet clinic in the City of London, offers what it bills as one of the world's most thorough health assessments, packing blood work, full-body MRI (brain included), ultrasound, mole checks, hearing tests and cardiac stress testing into a single working day, with results delivered before you leave.

One writer for Elite Traveler recently went through the Optimal+ programme, a six-plus-hour marathon aimed at high-performing, health-conscious clients. For men, it includes testicular scans and prostate ultrasound. The tone is calm and corporate-polished rather than clinical and stressful, and there are a few surprising touches: the MRI scanner streams Netflix (two David Attenborough documentaries got him through it), and brain scans can be viewed as a spinning hologram through a VR headset — a gimmick, even the radiologist concedes, but an increasingly common one in luxury medicine. The VO2 max test is gentler than the usual mask-and-treadmill ordeal: hiking to 90 percent of max heart rate, then taking an immediate ECG.

The real value, though, is what the tests turn up. The writer — motivated by losing his father to cancer the year before and wanting to stay healthy for his eight-year-old son — emerged with mostly good results, but two flags. Frequent ectopic heartbeats appeared during the exercise test, finally giving an explanation for years of unexplained chest flutters, and a hip lesion that turned out to be a benign bone cyst, to be monitored with a follow-up scan in six months. Both required follow-up outside the clinic, which is the honest limit of any screening service: it detects, it doesn't definitively resolve.

Why does this belong on a travel site? Because executive health checks are becoming part of the wellness-travel repertoire, especially in London, where high-end medical facilities sit alongside the five-star hotels this city's visitors already book. If you're flying in for a check-up, you can build a proper stay around it — though a day of blood draws and MRI hours isn't exactly a spa retreat.

The verdict is refreshingly balanced. The screening is genuinely comprehensive and efficiently run, and finding a benign cyst plus a heart rhythm quirk early has real value. But the price of peace of mind is steep — £12,500 for Optimal+ (roughly $16,900) — and as the writer puts it, whether knowledge actually brings you peace is up to you. For anyone considering the medical-screening-as-travel route, this is a clear-eyed look at what you actually get for the money, and what you don't.