Every year, travellers are turned away at the gate not because they are necessarily unfit to fly, but because they are carrying the wrong paperwork, or none at all. Most passengers never need medical documentation to board a commercial flight. But pregnancy beyond a certain gestation, recent surgery, a recent fracture or plaster cast, a recent heart attack, stroke or blood clot, and a range of other medical conditions can trigger an airline's medical clearance policy.

A comprehensive biomarker panel has become one of the most talked-about tools in preventive medicine, and also one of the most inconsistently priced.

A private GP consultation for a child gives you unhurried time with a GMC-registered doctor to assess an illness, discuss an ongoing concern, get a referral moving faster, or get a second opinion, either in person or by video.

A proper executive health screen for a man over 40 checks cardiovascular and metabolic risk first, not just testosterone. It should cover blood pressure, a formal cardiovascular risk score, ApoB and Lp(a), glucose regulation, and an informed decision on PSA, with imaging added only where it changes the answer. London prices run from around £1,000 for a conventional check to £14,000 for imaging-led programmes. At The Wellness, doctor-led assessments start from £3,495.

Internationally, the top end goes further still, with longevity memberships now advertised at $100,000 a year. The important question is therefore not how much a longevity programme costs. It is what the money actually buys, which parts are medically useful, and whether the results lead to a plan you can act on.

Most of a one-day executive health screen, bloods, examination, ECG and selected imaging, can be coordinated into a single London visit, though some lab and radiology reports take longer and are folded into the final physician review. London pricing runs from around £1,000 for a conventional check to £14,000 to £15,000 for imaging-heavy programmes. At The Wellness, the Executive Health Programme starts from £11,995.

A custom blood panel is a set of tests chosen by a yourself or your doctor to answer your specific health question, rather than a fixed menu applied to everyone.

Longevity+ is an extended biomarker panel that goes beyond a standard executive blood test, adding depth in cardiovascular particle risk with ApoB and Lp(a), insulin sensitivity, inflammation, hormones and nutritional status. It is most useful for people who already have a solid baseline and want to track gradual change over years, not for someone who has not yet had a standard panel. It deliberately leaves out broad population cancer marker panels and treats biological age scores as informative rather than decision-driving.

GLP-1 medications have changed what is possible for weight management, and they have also created a genuine problem: a prescription handed over after a five-minute online questionnaire, with no baseline bloods, no examination and no ongoing clinical oversight, is not the same medical proposition as the same drug prescribed and monitored properly.

Whole-body MRI is marketed heavily as the ultimate health check, and the honest answer is that it is the right test for a specific question and the wrong default for a healthy person with no particular concern.

Menopause care in the UK has improved enormously in public awareness terms and has not always improved at the same pace in clinical practice, and the result is a common and frustrating pattern: symptoms dismissed as stress, a single hormone test used to rule perimenopause in or out when the diagnosis is actually clinical, and HRT started or withheld without a proper conversation about the individual risks and benefits involved.

A blood panel is only as good as the markers it measures and the doctor who reads them, and most "longevity testing" sold online is neither. The Wellness runs a longevity blood testing programme in London built around more than one hundred and sixty biomarkers drawn from accredited, gold-standard laboratories