Cortisol Blood Test

£40.00

The Biosensitive® Cortisol Blood Test measures your body’s key stress hormone to assess adrenal function, energy balance, and overall wellbeing. Abnormal cortisol levels can affect sleep, mood, metabolism, and hormone regulation. This accurate, laboratory-based test helps identify whether your levels are too high or too low, offering clear insight into how your body responds to stress. Results are reviewed by our clinical team, giving you professional interpretation to help restore balance, improve resilience, and support optimal health.

Shipping & Returns

All items are typically dispatched within 24 hours. 30-day return for unopened and unused product tests and kits.

Biomarkers

Which biomarkers are tested?

Click on each biomarker to see what it does and how it can influence your health.

Biomarkers
Biomarkers
Cortisol

Cortisol is the body’s primary stress hormone, released by the adrenal glands. It plays a key role in regulating energy, metabolism, blood sugar, inflammation, and the body’s response to stress. Abnormal cortisol levels can contribute to symptoms such as fatigue, anxiety, weight changes, poor sleep, low mood, or difficulty coping with stress. Measuring cortisol helps identify whether stress or adrenal imbalance may be affecting your overall health and daily wellbeing.

Why Monitoring Your Cortisol Matters

Understanding what’s happening inside your body is essential for successful, sustainable weight loss. These biomarkers reveal how your metabolism, hormones, blood sugar, and nutrient levels may be influencing your progress — helping you identify what’s supporting your goals and what may be holding you back.

Stress Hormone Balance

Understand how your cortisol levels are affecting your energy, mood, sleep, and overall stress response.

BIOMARKERS INCLUDED
Cortisol

Adrenal Function & Resilience

Assess how well your adrenal glands are supporting daily stress demands, recovery, and metabolic regulation.

BIOMARKERS INCLUDED
Cortisol

Mood, Fatigue & Sleep Patterns

Identify whether abnormal cortisol levels may be contributing to low mood, burnout, disrupted sleep, or persistent fatigue.

BIOMARKERS INCLUDED
Cortisol

Metabolism & Inflammation Response

See how cortisol is influencing blood sugar, appetite, inflammation, and your body’s ability to cope with physical or emotional stress.

BIOMARKERS INCLUDED
Cortisol
Biosensitive blood tests

How it works

A simple three-step process to get clinically led insights into your health.

Step 1

Order your test

Order your Cortisol Test and we will send your kit to you the following day.

Order your test
Step 2

Provide your blood sample

This test can be done via a finger prick, your kit will include easy to read instructions on how to complete this.

Provide your blood sample
Step 3

Your results

Once your sample is sent back to us using the prepaid envelope in your test kit, we will produce your results within 3-5 days. You will be provided with a doctors report based on your results.

Your results

FAQ – Cortisol Blood Test

If you have any other questions please reach out to us directly.

1. What does the Cortisol Blood Test measure?

This test measures your circulating cortisol level, the body’s primary stress hormone. Cortisol affects energy, metabolism, mood, sleep, and the ability to cope with stress. Abnormal levels can explain symptoms such as fatigue, anxiety, weight changes, or burnout.

2. Why would I need to check my cortisol levels?

You may benefit from this test if you experience persistent fatigue, poor sleep, chronic stress, mood changes, low energy, or difficulty recovering from daily stressors. Cortisol imbalance can also affect weight management and overall wellbeing.

3. Do I need to take this test at a specific time of day?

For the most accurate assessment, we recommend taking this test between 7–10 AM.

4. Do I need to fast before taking the test?

No fasting is required. However, avoid intense exercise, caffeine, or alcohol beforehand, as these can temporarily alter cortisol levels.

5. Can cortisol levels affect weight or metabolism?

Yes. Elevated cortisol can lead to increased appetite, cravings, abdominal weight gain, and difficulty losing weight. Low cortisol can contribute to fatigue, poor resilience, and low motivation.

6. How do I collect the blood sample?

A finger prick blood collection sample. You will be sent a kit with easy to follow instructions.

7. How long do results take?

Results are typically ready within 2–5 working days once we receive your sample. You will be notified as soon as your report is uploaded.

8. Can stress alone cause abnormal cortisol levels?

Yes. Emotional, physical, or lifestyle stress can all influence cortisol. However, persistent abnormalities may also indicate adrenal dysfunction or underlying health issues that require further assessment.