Medical Certificate for High Altitude Trekking
Fitness clearance for Everest Base Camp, Kilimanjaro, the Alps and beyond, issued by a UK GP.
Most trek operators and tour companies require a signed medical certificate before departure. Get yours most same day, all by 9AM next morning. No appointment needed.
✔ Accepted by trek operators and tour companies worldwide.
✔ Covers Everest Base Camp, Kilimanjaro, Alps and all high altitude routes.
✔ Most same day. All by 9AM next morning. From £67.
✔ Full refund if the GP cannot issue.
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How It Works
Complete a short online questionnaire
No appointment required. Complete a short medical questionnaire and upload any supporting evidence.
Doctor reviews your evidence
A GMC-registered doctor reviews your submission individually. No automated approvals.
✔ Full refund if the GP cannot issue.
Receive your certificate
Certificates arrive most same day, all by 9AM next morning, delivered as a signed PDF direct to your inbox.
What our patients say
Verified reviews from real MedicalCert patients
Jon
March 2025
Quick turnaround, hassle free
Good experience overall. Lots of details to provide but the interface was simple and easy to use. Turnaround time was very quick and hassle free.
Robert S.
June 2025
Same-day certificate, amended later for free
Fast, efficient service. I received my certificate the same day. When the event organisers later required specific wording I contacted MedicalCert and they updated it promptly at no extra charge.
Sarah J.
February 2025
Same day, no GP appointment needed
The whole process was online, the doctor responded quickly, and the certificate arrived the same day. No GP appointment needed. Brilliant service.
A medical certificate for high altitude trekking is a doctor-signed document confirming you have no known contraindications to undertaking a trek at altitude. Many tour operators, charity challenge organisers, and trekking permit authorities require one before you depart — particularly for treks above 3,500 metres. This guide explains who needs one, which conditions require extra scrutiny, and how to obtain clearance quickly online, subject to clinical review by a GMC-registered doctor.
High altitude trekking presents distinct physiological challenges — reduced oxygen availability, extreme temperature variation, and limited access to emergency medical care — that make pre-trip health clearance both sensible and, in many cases, a formal requirement. Whether you’re preparing for Kilimanjaro, Everest Base Camp, the Inca Trail, or a Himalayan circuit, understanding what your operator requires in advance can prevent last-minute complications.
Why a Medical Certificate Is Required for High Altitude Trekking
At altitude, the body faces significantly lower atmospheric pressure and reduced oxygen levels. Above 3,500 metres, the risk of altitude-related illness — including Acute Mountain Sickness (AMS), High Altitude Pulmonary Oedema (HAPE), and High Altitude Cerebral Oedema (HACE) — increases considerably. Certain pre-existing conditions can heighten these risks substantially.
Tour operators and trekking organisations require a medical certificate for several key reasons:
Participant Protection
Remote mountain environments offer limited access to medical care. A pre-departure health assessment helps identify conditions — such as cardiac or respiratory problems — that could become life-threatening at altitude.
Legal & Insurance Requirements
Many operators require a signed medical certificate as part of their insurance and liability frameworks. Without one, participants may face exclusion from the trek or invalidation of their adventure travel insurance.
Entry & Permit Compliance
Some trekking authorities — particularly for organised Himalayan expeditions — require medical documentation as part of the permit or registration process for guided groups.
Popular High Altitude Treks and Their Medical Requirements
Requirements vary by operator, destination, and trek difficulty. Below is an overview of the most common high altitude treks undertaken by UK trekkers.
Always check requirements directly with your operator or charity organiser. Requirements can differ between providers even for the same trek, and some operators may specify wording or use their own medical form for a doctor to complete.
Medical Conditions That Require Extra Assessment at Altitude
A high altitude trekking medical certificate involves a clinical review of your health history and current status. The following conditions warrant particular consideration, and trekkers with these conditions should disclose them fully during the consultation. The doctor will assess whether online clearance is appropriate, subject to clinical review.
Heart & Circulation
- Coronary artery disease or history of heart attack
- Arrhythmias or palpitations
- Uncontrolled hypertension (high blood pressure)
- Heart failure or cardiomyopathy
- History of blood clots (DVT or PE)
Lungs & Breathing
- Chronic obstructive pulmonary disease (COPD)
- Asthma — particularly if poorly controlled
- Previous pneumothorax (collapsed lung)
- Sleep apnoea
- Any condition affecting blood oxygen saturation
Brain & Nervous System
- Epilepsy or seizure disorders
- Previous stroke or TIA
- Migraine — altitude can be a known trigger
- Conditions affecting balance or coordination
General Health Factors
- Diabetes (Type 1 or 2) — insulin requirements change at altitude
- Severe anaemia
- Sickle cell disease or trait
- Pregnancy
- Recent surgery or hospitalisation
Many trekkers take Diamox to assist acclimatisation. If you are considering this medication, your doctor should screen for potential interactions with your existing prescriptions and assess whether it is appropriate for you. Diamox is a sulfonamide antibiotic derivative — those with sulpha allergies should discuss this with a clinician before use.
What a High Altitude Trekking Medical Certificate Includes
A doctor-signed medical certificate for high altitude trekking confirms that, based on the clinical information provided, you have no known contraindications to undertaking the planned trek. It is not a guarantee of fitness or safety, but a professional medical assessment based on your health history. The certificate will typically confirm:
- Your name and date of birth
- Confirmation of fitness for high altitude trekking (or the specific trek named)
- That no significant medical contraindications were identified at the time of review
- The date of assessment and the doctor’s GMC registration details
- The doctor’s signature
If your operator provides a specific form, this can be uploaded at the consultation stage for the doctor to complete. Where additional information is needed — for example, results of a recent blood pressure check or asthma review — the doctor may request this before issuing the certificate.
How to Get a High Altitude Trekking Medical Certificate Online
Check your operator’s requirements
Confirm what documentation your trek operator, charity, or permit authority requires. Download any official forms that need to be completed by a doctor.
Complete the online health questionnaire
Fill in MedicalCert’s secure consultation form, covering your medical history, current medications, relevant conditions, and details of the planned trek and its maximum altitude.
Upload your operator’s form (if applicable)
If your operator has provided a specific medical form for a doctor to sign, upload it at the end of the consultation form. The reviewing doctor will complete it to the required standard where clinically appropriate.
GMC-registered doctor review
A GMC-registered doctor reviews your submission. Where clinically appropriate, a signed certificate is issued. If further information is required, the doctor will contact you directly before a decision is made.
Receive your certificate by email
Your certificate is delivered as a PDF to your inbox — same day or by 9AM the following morning with the express service. A unique reference number is included for verification purposes.
Get Your High Altitude Trekking Medical Certificate Online
GMC-registered doctors. No appointment needed. Certificates for Kilimanjaro, Everest Base Camp, Inca Trail, and all major high altitude treks.
Apply for Your Certificate →Frequently Asked Questions
Do I need a medical certificate for Kilimanjaro?
Most reputable Kilimanjaro operators and charity challenge organisers require trekkers to provide a medical certificate or signed health declaration before departure. This confirms you have been assessed by a doctor and have no known contraindications to high altitude trekking. Even where it is not formally required, a pre-trek medical review is strongly recommended given the physiological demands of reaching 5,895 metres.
Can I get a high altitude trekking medical certificate online?
Yes, subject to clinical review. MedicalCert’s GMC-registered doctors can assess your suitability for high altitude trekking based on an online health questionnaire and your medical history. Where clinically appropriate, a signed certificate is issued and delivered to your inbox. If your health history suggests a condition that warrants face-to-face assessment, the doctor will advise accordingly.
What altitude triggers the need for a medical certificate?
Most operators requiring medical documentation set the threshold at treks exceeding 3,000–3,500 metres maximum altitude. Above this level, the risk of altitude sickness increases significantly, and the physiological demands on the cardiovascular and respiratory systems are substantially greater than at sea level. Some operators apply this requirement to all international adventure treks regardless of altitude.
Can I trek at altitude if I have high blood pressure?
Trekkers with controlled hypertension can often obtain medical clearance for high altitude trekking, subject to clinical review of their current medication, recent blood pressure readings, and overall cardiovascular health. Uncontrolled or severe hypertension is a contraindication to high altitude activity. A doctor reviewing your case will assess whether clearance is appropriate based on your specific circumstances.
Can I trek at altitude if I have asthma?
Many trekkers with well-controlled asthma complete high altitude treks safely. However, cold, dry mountain air can exacerbate respiratory symptoms, and the reduced oxygen at altitude places additional demands on lung function. A doctor will assess the severity and control of your asthma as part of the certificate review. Trekkers with poorly controlled or severe asthma may be advised to seek a face-to-face respiratory assessment before departure.
Do I need to take Diamox, and can a MedicalCert doctor prescribe it?
MedicalCert does not currently prescribe Diamox (acetazolamide) as part of the trekking certificate service. If you wish to consider Diamox for altitude acclimatisation, you should discuss this with your NHS GP or a travel medicine specialist, who can assess whether it is appropriate for you and check for any interactions with your current medications. The trekking medical certificate and Diamox prescription are separate processes.
How far in advance should I get my trekking medical certificate?
Most operators accept certificates issued within three to six months of the trek departure date. We recommend applying no earlier than three months before your departure, and ideally within six to eight weeks of travel, to ensure the certificate reflects your current health status. Always check your specific operator’s validity requirements before applying.
Clinically Reviewed By
Dr Maria Knobel
Medical Director, Nobel Medical LLC
GMC Registration
► 7495073 – View on GMC register