Cortisol Test
Original price was: £99.00.£36.99Current price is: £36.99.
Measure your stress levels with ease. This simple at-home test kit provides quick and accurate results, helping you monitor your cortisol levels and manage stress effectively. Includes easy-to-follow instructions and lab-certified analysis.
- A convenient kit for accurately measuring cortisol levels.
- Lab-certified analysis with quick results.
- Gain valuable insights into your stress levels and take control of your well-being.
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Biomarkers
Cortisol Levels
Cortisol, a steroid hormone produced by the adrenal glands, plays a crucial role in various physical and mental processes within the body. While it is commonly known as the “stress hormone” because it is released in response to perceived stress, its functions extend beyond this role. Cortisol is also integral to several metabolic and immune responses, helping regulate energy use, inflammation, and the body’s overall balance. Notably, cortisol levels fluctuate throughout the day, peaking shortly after waking and reaching their lowest point by the evening. For an accurate measurement, it is essential to have your blood test conducted in the morning, right after you wake up, when cortisol levels are at their highest.
Information
Why get a cortisol test?
Additional Insight from Dr Sameer Nakedar, MBBS, MRCGP, PGCert
Additional Information
There are several types of cortisol blood tests, each serving a specific purpose depending on your needs. The most common test is the serum cortisol test, which measures the amount of cortisol in your blood serum. This test is typically used to diagnose Adrenal Hyperfunction, a condition where the adrenal glands produce excess cortisol. It may be triggered by stress, Cushing’s disease, or Addison’s disease.
Another option is the plasma cortisol test, which measures cortisol in the blood plasma. This test is used to diagnose adrenal insufficiency, a condition where cortisol production is inadequate, often due to adrenal tumors, pituitary gland issues, or certain medications.
The urinary free cortisol test measures cortisol levels in your urine and is used primarily to diagnose Cushing’s syndrome, where the body produces too much cortisol.
If you experience symptoms such as fatigue, muscle weakness, skin changes (e.g., bruising or rashes), anxiety, mood swings, or frequent thirst, it may be time to consult your doctor and get tested to understand your cortisol levels. Early detection can help ensure appropriate treatment for underlying conditions.
When choosing a cortisol test, discuss with your doctor which one is right for you based on your symptoms and medical history.
Understanding Cortisol and Testing Methods
Cortisol, often called the “stress hormone,” is produced by the adrenal glands and plays a vital role in the body’s response to stress. Its levels can fluctuate based on factors such as sleep, diet, exercise, and emotional stress.
The most common method for measuring cortisol is a blood test, typically conducted in a doctor’s office or laboratory. However, there are other testing options, such as saliva tests, which can be done at home using commercially available kits, and hair samples, though this method is less commonly used.
If you undergo cortisol testing, it is crucial to follow specific instructions, such as fasting for eight hours before the test and avoiding stressful situations or strenuous activities beforehand. Additionally, inform the healthcare provider if you are taking any medications, as they can affect your cortisol levels.
Cortisol tests provide important insights into how your body is coping with stress. High levels may indicate excessive stress or conditions like Cushing’s syndrome, while low levels may point to adrenal insufficiency or fatigue. If you suspect any issues with your cortisol levels, it’s important to consult your doctor for proper diagnosis and treatment.
Interesting Statistics on Stress Levels in the Body
%
Of People experience stress that impacts their physical health
%
Of UK citizens felt ‘overwhelmed or unable to cope’ at some point in the past year
Experts Opinion
This test can help identify or rule out conditions associated with abnormally high or low cortisol levels, providing valuable insight into your adrenal health.

Dr Sameer Nakedar
MBBS, MRCGP, PGCert
How to take a Cortisol Test
Collecting a blood sample for your finger prick home test is simple and easy to do. Watch the video below for step-by-step instructions on how to perform the test at home.
How Cortisol Home Tests Work
1. Pick your home test
We offer a comprehensive range of tests to meet your health needs. With next-day delivery across the United Kingdom, you can avoid the hassle of sitting in a doctor’s office or clinic. Take our quiz to easily find the perfect test for you.
2. Take your test
Activate your test and collect your sample in the morning. Simply return your sample the same day using the prepaid shipping label provided. The sample is collected using a quick and easy finger prick method, which takes only about 5 minutes to complete.
3. Results within 48 hours
You’ll receive verified results along with clear insights into what your biomarkers mean. Order now and take the first step toward becoming a healthier version of yourself!
Cortisol Test Information
Specification of Cortisol Test
Test Name: Cortisol Test
Also Known As:
Complete Blood Count (CBC)
Full Blood Panel
Blood Cell Count Test
Biomarkers Tested:
Haematocrit
MCHC (Mean Corpuscular Hemoglobin Concentration)
RDW (Red Cell Distribution Width)
WBC (White Blood Cells)
Eosinophils
Monocytes
Platelet Count
Haemoglobin
MCV (Mean Corpuscular Volume)
RBC (Red Blood Cells)
Basophils
Lymphocytes
Neutrophils
Sample Collection:
Test Tube: EDTA (Purple Microtainer)
Brand: Welzo
Turnaround Time: Approximately 24 hours
Lab Test Ranges: [Include specific ranges if available]
Test Kit Marking: MHRA/UKCA Approved
Lab Location: United Kingdom
This format is clean, structured, and ensures key details are easy to find. You may also want to add specific reference ranges for the biomarkers if they are available to enhance the test’s detail.
What does a Cortisol Test for?
Are Cortisol Tests available on the NHS?
FAQs
Do I need to fast before a cortisol blood test?
No, fasting is not necessary before a cortisol blood test.
When should you have your cortisol levels checked?
There are several reasons why your doctor might recommend a cortisol blood test. They may suspect Cushing’s syndrome, a condition caused by elevated cortisol levels, or Addison’s disease, which results from low cortisol levels. Additionally, your doctor may order the test if you exhibit symptoms of a cortisol imbalance, such as fatigue, weight gain, or difficulty sleeping. This test helps provide valuable insights into your adrenal health and overall well-being.
Where do I send my sample?
You will receive a free return label to send your health test samples back to our lab for analysis. Clear instructions, including return details, will be provided via email to ensure a smooth and hassle-free process.
What do I need to do before my test? i.e. fast, no drinking, etc
If fasting or limiting alcohol intake is required before your blood test, we will send you personalized instructions via email after your order is placed. However, most tests can be taken without the need for fasting.
When will I get my results/how will I receive my results?
Results are typically processed within 2–3 working days. If a sample is sent over the weekend (which we do not recommend), you will receive your results within 2–3 days from the following Monday. Once your results and personalized report are ready, you will receive an email notification with instructions to log in to the Welzo online platform and view your results.
What does a high cortisol blood test mean?
High cortisol levels may indicate Cushing’s syndrome, a condition caused by excess cortisol. This can result from taking certain medications, such as corticosteroids, or from a tumor in the pituitary or adrenal glands. If your cortisol levels are elevated, it’s important to consult with a healthcare provider to determine the underlying cause and explore appropriate treatment options.
How do I know if I have a cortisol imbalance?
Cortisol is a hormone that plays a key role in regulating several important processes in the body, including the stress response, blood sugar levels, and inflammation. An imbalance in cortisol levels can lead to a range of symptoms, such as fatigue, weight gain, mood swings, and difficulty sleeping. If you suspect a cortisol imbalance, it’s important to speak with your doctor. They can order a blood test to assess your cortisol levels and help determine the best course of action.
How do I know if I have a cortisol imbalance? What if my results show that I’m outside the normal range?
If your results fall outside the normal range and raise concerns, it is crucial that you contact your GP or emergency services immediately by calling 111 or 999. Please remember: if you feel unwell or are concerned about your health, do not wait for test results—reach out to emergency services as soon as possible.
Disclaimer: If your test results are abnormal, we are not responsible for follow-up treatments or for notifying a healthcare professional. By taking a test with us, you agree to take the necessary steps to follow up with a healthcare provider independently.
Where does my information go, and is the system secure?
Once you register with our platform, your details are securely encrypted and pseudonymized. Your sample will be sent to our lab and registered using an encrypted HL7 file (Health Level Seven International), a standard for exchanging and managing electronic health records (EHRs). To further protect your privacy, your data and sample will be pseudonymized, meaning an unidentifiable alphanumeric code will be applied to your account. This enhances the security and anonymity of your information.
