Cortisol Levels & Daily Rhythm Test
Map your physiological stress responses. Track key adrenal output timings to optimize your recovery, sleep windows, and daily performance. Fast digital dashboard delivery with plain-English AI data trends.
1 biomarkers across 1 health systems
Tap any group to see exactly what we measure and why it matters.
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Cortisol
Your main stress and energy hormone, produced by your adrenal glands. It follows a strong daily rhythm: highest in the morning (which is why we ask for a morning sample) and lowest at night. Affected by sleep, training, work stress and caffeine.
From order to answers in four steps
Order online
Choose at-home or clinic. Free tracked delivery either way.
Collect your sample
Simple finger-prick or a quick visit to one of our UK partner clinics.
Lab analyses it
Posted back free to our UKAS-accredited partner laboratories.
Plain-English results
Within 48 hours in your secure portal, with your lifestyle action plan.
Includes AI summary & action planQuick prep for an accurate result
Numbers on the left. Answers on the right.
Every marker shows its result and reference range, colour-coded by status. Each group gets a plain-English explanation and lifestyle context.
in Customizer
What people say
Frequently asked
Capillary (finger-prick) samples are highly reliable when collected correctly. Our partner laboratories are UKAS-accredited and process samples to the same clinical standards used by the NHS and private clinics. For panels needing a larger sample, a clinic draw is recommended at the cart stage.
Morning, before 10am, after an 8-hour fast (water is fine). Avoid heavy exercise for 24 hours and pause biotin supplements for 2 days. Post the sample back the same day, Monday to Thursday.
Vitall Check provides AI-powered plain-English summaries and a personalised lifestyle action plan, not clinical diagnoses. If results sit outside the reference range, we provide a ready-to-use guide for your next GP appointment.
Many medications and conditions can influence biomarker results. We recommend discussing your medical history with your GP, who will interpret your results in the full clinical context.
When your kit arrives, visit vitallcheck.co.uk/activate and enter your order number.
Delivery: Free tracked delivery on every kit, both ways. Order before 1pm Monday to Friday for next-day delivery.
Posting your sample: Post Monday to Thursday so your sample reaches the lab before the weekend.
Sample failures: If the lab can't process your sample, your replacement kit is free. Additional replacements are charged at £40.
