Cortisol
Your main stress hormone.
Why it matters
Linked to energy, sleep, mood and how your body handles pressure.
Cognitive Performance Panel
UK Partnered Clinic
£275.00
Skip to product information
Cognitive Performance Panel
£275.00
Focus. Memory. Mental endurance. Brain longevity.
Your brain runs on biology. Cognitive performance is the difference between glucose stability, thyroid signalling, B12 and iron status, and the cortisol curve that decides whether you wake up sharp or foggy. The Cognitive Performance Panel maps all four.
What this panel reveals
- Stress curve — Cortisol and DHEA-S. The cortisol-to-DHEA ratio is one of the cleanest markers of mental burnout vs. resilience.
- Full Thyroid — TSH, Free T3, Free T4, plus thyroid antibodies. Subclinical hypothyroidism is a leading cause of brain fog that GP testing routinely misses.
- Glucose Regulation — HbA1c, glucose, insulin, C-peptide. Stable blood sugar is the foundation of stable focus.
- Cognitive Micronutrients — full iron studies, B12, folate, zinc, vitamin D. Even mild deficiencies in any of these cause measurable drops in working memory and processing speed.
Who this is for
- Founders, knowledge workers, students, and parents struggling with afternoon crash, brain fog or memory lapses
- High-pressure roles where mental edge is the product
- Anyone with a family history of dementia who wants to act early
Analysed in our ISO-accredited UK laboratory. Pair with sleep tracking and dietary tweaks for the highest-leverage wins.
*Sample requirements: x7 Blood Sample
Sample requirements
×77 blood tubes
Collected by our partnered phlebotomist in your booked clinic appointment. Phlebotomy fee included in the price.
ISO accredited
Independent quality standard
Plain-English reports
Easy to understand
GDPR-secure
Your data stays private
What we measure
The biomarkers in this panel.
DHEA-S
An adrenal hormone that balances cortisol.
Why it matters
Gives more depth to the stress-and-recovery picture.
Thyroid Stimulating Hormone
The hormone that tells your thyroid how hard to work.
Why it matters
A first-line marker for thyroid balance.
Free Tri-iodothyronine
The active form of your other main thyroid hormone (T3).
Why it matters
Helps show how well your thyroid signal is being used.
Free Thyroxine
The active form of one of your main thyroid hormones (T4).
Why it matters
Adds detail beyond TSH for a fuller thyroid picture.
Anti-Thyroglobulin Antibody
An immune marker linked to the thyroid.
Why it matters
Can be a sign your immune system is reacting to your thyroid.
Anti-Thyroid Peroxidase Antibody
Another immune marker linked to the thyroid.
Why it matters
Often raised when the immune system is reacting to thyroid tissue.
HbA1c
Your average blood sugar over the last few months.
Why it matters
Useful for understanding how your body handles sugar over time.
Glucose
Your blood sugar level at the moment of testing.
Why it matters
A snapshot of how your body is handling sugar right now.
Insulin
The hormone that helps move sugar from blood into cells.
Why it matters
Gives insight into how hard your body is working to keep sugar in check.
C-Peptide
A by-product of insulin production.
Why it matters
Shows how much insulin your own body is making.
Iron
The iron currently circulating in your blood.
Why it matters
Important for energy and oxygen delivery.
Ferritin
Your body's iron stores.
Why it matters
Low levels can leave you feeling tired; very high levels can be a sign of inflammation or iron overload.
Total Iron Binding Capacity
How much iron your blood can carry.
Why it matters
Helps put your iron level in context.
Transferrin
The protein that ferries iron around your body.
Why it matters
Adds detail to the iron-status picture.
Transferrin Saturation
How much of your transferrin is actually carrying iron.
Why it matters
A useful marker for both low iron and iron overload.
Albumin
The main protein in your blood, made by the liver.
Why it matters
Gives insight into liver function and overall nutrition.
Calcium
A mineral important for bones, muscles and nerves.
Why it matters
Useful for understanding bone health and overall nutrition.
Magnesium
A mineral involved in energy, sleep and muscle function.
Why it matters
Low levels are linked to fatigue, cramps and poor sleep.
Folic Acid
A B vitamin important for new cells and red blood cells.
Why it matters
Low levels can leave you feeling tired and run down.
Vitamin B12
A vitamin needed for energy, nerves and red blood cells.
Why it matters
Low levels can be a sign of fatigue, brain fog or nerve issues.
Zinc
A mineral involved in immunity, taste and skin.
Why it matters
Low levels can be linked to slower healing or weaker immunity.
Vitamin D
A vitamin you make from sunlight and get from food.
Why it matters
Linked to bone strength, immune function and mood. Many people in the UK run low.
Is this panel right for me?
Who this panel is built for.
Who this is for
Consider speaking to a clinician first
This panel reports biomarker data. It does not diagnose any condition. Your results should be reviewed alongside the advice of your GP or another qualified healthcare professional.
How it works
Order to results in four simple steps.
-
1
Order online
Choose your test, complete your details and book your appointment (either through an email sent after an order with a UK partnered clinic or on our site for our own clinic).
-
2
Collect your sample
Visit our Chxhealth Clinic in County Durham or head to one of our 50+ partnered clinics all over the UK.
-
3
Lab analysis
ISO accredited process through our lab partners. Your sample is analysed using independently certified methods and is double checked for accuracy.
-
4
Get your report
Easy-to-read results sent from us to your inbox.
Why test
When numbers help you understand yourself.
Symptoms tell you something is wrong. Tests tell you what. This panel measures the biomarkers that connect to how you actually feel — so you can act with evidence, not guesswork.
- Spot issues earlyCatch shifts before they become symptoms.
- Track what changesDiet, training, lifestyle — see the impact in numbers.
- Peace of mind about your bodyUnderstand how you're really doing, in numbers.
FAQs
Common questions.
How is the sample collected?
You have three options:
- Visit our clinic in County Durham
- Go to one of our UK-wide partner clinics
- Have an at-home test delivered to you (only available on specific products)
How quickly do I get results?
Reports are typically delivered within 3–5 working days of the lab receiving your sample.
Is my data secure?
Yes — we're GDPR compliant and your results are stored in encrypted, UK-based databases. You can request deletion at any time.
Will I get help interpreting results?
Every report comes with a plain-English summary and a description of each of the biomarkers which you have had tested.
Ready to test?
Take the first step today.
Lab-validated, expert-reviewed, in your inbox in days.