Blood Test


Catecholamines are hormones produced by the adrenal glands. This blood test examines levels of the key catecholamines which include dopamine, noradrenaline and adrenaline.

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Special Instructions
This sample must be taken at our London laboratory.

Catecholamines blood test

About this test

Catecholamines are small molecules made by nerve tissue, the brain and the adrenal glands.

The main catecholamines are dopamine, noradrenaline and adrenaline.

Catecholamines help the body respond to stress or fright and prepare the body for "fight-or-flight" reactions by increasing the heart rate, blood pressure, breathing rate, muscle strength and mental alertness. They also lower the amount of blood going to the skin and increase blood serving the major organs, such as the brain, heart and kidneys.

How it works

Collect Sample

We send you an easy-to-use kit to collect your blood sample.

Post Sample

Post your sample to our lab in the prepaid envelope provided.

View Results

View results securely in your own personal dashboard.

Important Information

Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. Our doctors will interpret your results based on the information you have provided, but will not diagnose, consult or provide any treatment. You will be advised to see your doctor for any necessary follow-up action.

Tests Included

Adrenal Function

Noradrenaline is produced naturally by the body and is often referred to as a 'fight or flight' chemical, as it is responsible for the body's reaction to stressful situations, increasing alertness and reaction time.

The release of noradrenaline causes an increased heart rate, increased blood pressure, widening of pupils and widening of air passages in the lungs. Noradrenaline also narrows the blood vessels in the extremities, which redirects blood to essential organs such as the heart and brain. 

Adrenaline is a hormone released from the adrenal glands, involved in the body's fight or flight response. When the body is faced with a stressful or dangerous situation, adrenaline triggers the contraction of the blood vessels, to re-direct blood towards the major muscle groups including the lungs and heart. The body's ability to feel pain also decreases as a result of adrenaline. After the stress has subsided, the effects of adrenaline can last for up to an hour.

An overproduction of adrenaline is very common as most people are exposed to stressful situations on occasion. Symptoms of adrenaline release include a rapid heartbeat, high blood pressure, anxiety and excessive sweating. This release is a normal bodily response, intended to help respond quickly to a stressful situation.  

Medical conditions that cause an overproduction of adrenaline are rare, but an adrenal tumour (pheochromocytoma) can cause an increase in adrenalin levels. 

Dopamine is a neurotransmitter, responsible for the transmission of signals between nerve cells in the brain involved in many different processes including working memory, mood and movement.

Laboratory appointment in London

Your Blood sample will be analysed at our chosen laboratory based in the heart of London's medical district. You can be assured of fast, accurate results from the UK's largest independent provider of clinical diagnostic tests

Private laboratory analysis

Your blood sample will be analysed at one of our chosen laboratories. You can be assured of fast, accurate results from one of our accredited independent providers of clinical diagnostic tests.

Interpretation of results

Our medical team will comment on out-of-range blood results and give you follow-up advice where necessary. If you need it, a PDF copy of your Catecholamines blood test results can be downloaded for your doctor.

Secure online account

Once you have placed your order you can visit where you can manage your account, track your orders and view your Catecholamines blood test results.

Health and Lifestyle tracker

Stay motivated by filling in your online health and lifestyle questionnaire and seeing how improvements in your lifestyle can influence your results. Your medical and family history gives us vital information when interpreting your results.

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