Cardiovascular autonomic function lab

We offer a comprehensive range of diagnostic tests and treatments for patients with cardiac autonomic dysfunction. Our award-winning, highly skilled team of medical professionals utilises state-of-the-art technology to accurately assess the functioning of the cardiac autonomic nervous system and provide personalised treatment plans. Whether you require non-invasive tests such as heart rate variability assessment and valsalval manoeuvres or more advanced procedures like tilt table testing and deep breathing tests, we are dedicated to delivering exceptional care and improving your overall cardiovascular health.

We are ready to help!

The autonomic nervous system

The Nervous System can be divided into two groups: Somatic and Autonomic Nervous systems. Both systems have sensory and motor components, but differ in the type of body functions they control.


The Autonomic Nervous System regulates internal body functions outside of the patients mind, such as heart rate, blood pressure and sweating, which a patient can't stop or start at their will.


At UME Health, we work with an award-winning team of physicians and autonomic neurophysiologists to conduct highly specialised, diagnostic tests to measure your body’s response to stimulation to determine how well your autonomic nervous system is functioning. This is called an Autonomic Function Test (AFT).

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Who is autonomic function is recommended for?


It is recommended for patients with certain diseases which may affect the autonomic nervous system such as those with cardiovascular diseases, neurological diseases, diabetes, or post viral conditions such as long COVID. You may also be recommended for autonomic testing if you’re experiencing symptoms such as:

  • Low Blood Pressure
  • Dizziness and/or Light Heartedness/Fainting
  • Fatigue
  • Abnormal Sweating
  • Impaired urination

Cardiac experts at UME Health

The tests take 2 hours to complete and are relatively simple, consisting of several activities designed to stimulate the autonomic nervous system to produce measurable changes in blood pressure, heart rate and breathing in a controlled and safe environment. All tests are painless, non-invasive and require no downtime.

  • You will have a consultation with the doctor prior to tests where he will
    explain each section of AFT and what it measures for reassurance and clarity.
  • After this, you will complete the tests with our autonomic neurophysiologist. They will guide you throughout and let you know what you are required to do in each test.
  • Your heart rate, blood pressure and breathing rate per minute will be measured throughout each test which will provide us with information on the control of your heartbeat.
  • We will connect you to an ECG (heart monitor), a belt around your waist to measure your breathing rate, a simple oxygen saturation sensor on your finger and a finger cuff on another finger to measure blood pressure continuously.
  • A non-invasive probe is placed on the skin which measures oxygen and carbon dioxide and these are recorded when you are in supine position (lying on your back)
  • Once you've had your consultation and have completed the tests with our autonomic neurophysiologist, a detailed report will be sent to your physician who referred you.

Tests Include:

Deep Breathing Test

The patient is required to take several deep breaths over the course of a minute to assess the severity of autonomic diseases.

Deep Breathing Test

The patient is required to lie on a table, that is raised slowly until they’re in an almost upright position. We also use the Active Stand test as an alternative to tilting.

Valsava Maneuver

The patient is required to lean forward and blow into a tube to increase pressure in their chest.

Our Atonomic Function Specialists

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Professor Melvin Lobo


Dr. Peter Julu

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Dr. Mussadiq Shah

Why Choose UME Health Harley Street


Self-Pay Options

We offer self-payment options, and we can provide you with a breakdown of the expenses linked to your treatment.


Fast Scans and Results

We offer exclusive consultations every day at our specialised diagnostic facility and results of scans will be reported and delivered within 2 days.


Local GP Available

In case you're in need of immediate private GP attention, UME Health provides expedited services for the same purpose.


Friendly and Welcoming Staff

At our clinic, we take pride in our friendly and welcoming staff. We want our patients to feel welcome and cared for.

Autonomic function FAQs

Welcome to our FAQ section about autonomic function. We understand that patients often have questions and concerns about their autonomic function, and we have carefully selected some of the most commonly asked questions to provide you with the answers you need. This section aims to help you find the information you are looking for and address any doubts or uncertainties you may have about autonomic function. Whether you are seeking clarification on specific symptoms or are curious about potential treatments, our FAQ section is designed to assist you. Explore the questions below to gain a better understanding of autonomic function and find the answers you've been searching for.

UME Health Patients Reviews

At our clinic, we strive to provide the best possible care to our patients. We are dedicated to ensuring that each patient has a positive treatment experience and receives the best possible care from industry consultants. Our goal is to provide a comfortable and welcoming environment where our patients feel cared for and supported throughout their treatment journey. We value our patients' feedback and are committed to continuously improving our services to meet their needs.

sharon wallis
sharon wallis
Very pleased they were able to fit me in so quickly. Easy place to find, and very comfortable surroundings. The 2 technicians were ver6 kind and made me feel very relaxed.
David Young
David Young
I visited Lumen for a full screening in November 2023. I chose the Lumen because for the last fifteen years I have had regular MRI assessments with Dr Garry Savin at his previous practice. Therefore, it was imperative that I visited his fabulous new clinic. Lumen have the most state of the art technology in the world of preventative medicine but my reason for choosing the clinic was because it is run by Dr Savin. Machines are machines but the difference with Lumen is the man behind the machines - that is the key - and Dr Savin is that difference. That is the reason why I've followed him to his Harley street clinic. Lumen offers a state of the art service that is in a league of its own. If you are able to take up the opportunity to have a screening you won't regret it and should there be any issues the diligent on going support is amazing and couldn't be bettered. When you buy a car it isn't just the vehicle you judge it is also the after sales service - Dr Savin's I would suggest is second to none. Lumen as a clinic is amazing. Dr Savin and his team provide a service that makes you feel relaxed, informed and cared for from the moment you arrive. His wonderful colleague Natalie Boden steers you through the day from assessment to assessment, with Dr Savin reviewing your every move. The location in Harley Street couldn't be more convenient, the building luxurious and the team ultra efficient. If you are wondering who should do your preventative assessment then I would say choose Lumen because you will get the most advanced technology alongside good old fashioned GP care. Lumen is the best and you won't regret choosing it for your screening. If you run a successful business perhaps you could provide for your staff a screening at Lumen? I'm sure they would be forever grateful and you never know you may just save a life! Finally, I would be very happy to provide further references on Dr Savin and Lumen if required. Please approach Lumen and ask for the person who provided this review.
Adel Ekladios
Adel Ekladios
Great place. Spacious, clean, welcoming and friendly reception. The site is equipped with an up-to-date equipment.
Nigel Lowndes
Nigel Lowndes
The staff are so friendly and work as team
Valentina Santo
Valentina Santo
I highly recommend 17 Harley Street clinic, Doctor Nazir and all his team
Sol Downes
Sol Downes
I sought the help of PODOGO in June this year. After reading about Consultant Mr. Nazir background on the website, I thought that he would be the ideal person to investigate my problem; which was an ongoing foot injury that had been previously misdiagnosed by the NHS.Upon first meeting Mr. Nazir, it was very apparent that he was incredibly perspicacious in relation to his field, which was displayed by the way he was able to identify where my pain was, and his explanation of what could have been the root cause.This placed me at immeditate ease, by feeling he was more than capable to deal with my problem, of which I had suffered with for well over a decade with.Mr. Nazir very quickly identified what he suspected to be the problem, and arranged for a scan to be done. The scanned confirmed his suspicions that the injury was a fracture to my 5th metertasal bone, and that the tendon had been damaged, resulting in a full detachment.After carefully listening to the options Mr. Nazir suggested to fix my injury, I decided to go ahead with surgery, which was to remove a large piece of damaged bone, and reattach the damaged tendon.After suffering for a number of years, I placed my trust in Mr. Nazir to assist me in hopefully getting my full mobility back, and to be pain free, as this injury had had a serious impact on my overall health, for a considerable number of years. In my view, he has more than delivered on what he said he could.The day of the surgery was an absolute breeze, and all the staff that supported me, were also so professional by providing exceptional care.I am now approximately 8 weeks post op, and my foot has never felt so good, all my pain has gone away, and I am making great progress now, including being able to walk without any pain.To say I am surprised and elated at the success of the operation, would be an understatement.I am extremely grateful to Dr. Nazir for his extremely fast prognosis, diagnosis and successful treatment.I would highly recommend anyone to see Consultant Nazir, should they be in need of any foot related problem.
Michelle Eggleston
Michelle Eggleston
Really impressed with service here. Went for an MRI appointment. Staff were welcoming and friendly, made me feel less anxious and very speedy. Would recommend to anyone.
Debra Vercammen
Debra Vercammen
Felt very safe and well cared for

We are here to help!

At UME Health, we are committed to providing exceptional healthcare services to our patients. Whether it's a question about your health, or you need assistance scheduling an appointment, don't hesitate to contact us - we are here for you!

UME Health, previously known as the Harley Street Clinic Diagnostic Centre, is a leading outpatient and diagnostics centre located on Harley Street, offering high quality imaging services and compassionate patient care.

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