• For Healthcare Professionals
  • 17 Harley Street, London

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 patient's feedback and are committed to continuously improving our services to meet their needs.

Excellent service,I was there approximately 35-40 minutes early and was taken through for my scan within two minutes of arrival. Great service and staff were very friendly and helpful and explained everything as I went through the scan. Fantastic thanks Alfred
Emily Lynn
Emily Lynn
All I can say is John Rubin is the bees knees.
Karen Revel-Chion
Karen Revel-Chion
Visiting the clinic is a good experience. The staff treat their patients with a perfect mix of friendliness and professionalism.
Bijan Hassanzadeh
Bijan Hassanzadeh
Very attentive, caring and polite. The staff made me feel comfortable and confident that I am in good hands.
Tim Edge
Tim Edge
Efficient, helpful staff. Everything ran smoothly!
Philip Connolly
Philip Connolly
The two people I met this morning Lisa and Anmir were absolutely marvellous. Nothing was too much trouble for them. They were courteous, friendly, very professional and efficient and constantly smiling and making me feel at ease. This would have to rate as the best experience in a medical facility I’ve ever had. Thank you so much to them both. Particularly Anmir ,before I went in the MIR scan machine , he made sure I was comfortable and was an absolute gentleman afterwards.
Kath Blakeman
Kath Blakeman
I could not had had a better experience, Thanks to Russell who made me feel totally at ease, whilst having an MRI on my spine today. Many thanks.

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 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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