Price: £50
Turnaround: 4 – 12 hours
Appointment: 15 minutes
General Health
How to Book a Same-Day Private GP Appointment in London
It’s common to need a GP appointment at short notice. Health concerns don’t always follow a schedule, and symptoms can
May 12, 2026
Cortisol, often referred to as the “stress hormone,” plays a vital role in regulating various functions within the body, including metabolism, immune response, and blood sugar levels. A cortisol blood test helps assess the levels of this hormone in your bloodstream, offering valuable insights into your adrenal gland function and overall health.
A cortisol blood test is recommended to:
High cortisol levels may indicate Cushing’s syndrome, stress or anxiety tumours of the adrenal or pituitary glands.
Low cortisol levels may suggest Addison’s disease, or hypopituitarism (reduced function of the pituitary gland).
Your doctor will interpret the results in the context of your symptoms and medical history and may recommend further tests if needed.
Signs of high or low cortisol levels include:
You may need to a get a cortisol blood test if you:
Use our online booking engine or book your test by giving us a call.
On the online booking engine select the “appointment type” you need.
You will be seen by one of our friendly phlebotomists or trained clinicians.
If visiting one of our clinics in London, please remember to inform your healthcare provider about any medications, supplements, or herbal remedies you are taking. Also, try to avoid intense exercise, stress, and alcohol for 24 hours before the test. Aim to get a good night’s sleep before the test to minimise stress-related fluctuations.
A healthcare professional will draw a sample of blood using a sterile needle. The procedure is typically fast and only takes a few minutes. You can also return to most of your regular activities immediately after the test.
Cortisol blood test results are usually available within a few days. Your doctor will explain what the results mean and whether additional tests are required.
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No GP appointment requirement for blood tests
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We offer a wide range of private blood tests in London. Same-day appointments are available 5 days a week.
We work with experienced consultants & healthcare professionals who have received positive feedback from our patients, and with whom we have established long-term relationships.
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