Fatigue & Sleep
Complete your test. (optional)
- No referral needed
- 1000+ collection points
- Results typically within 2 working days
- Every result reviewed by a BIG-registered doctor
Product description
A comprehensive blood test with markers related to energy, recovery, and sleep, for broader insight into the factors influencing your vitality.
Fatigue & Sleep is a blood test measuring 8 biomarkers, reviewed by a doctor.
Eight biomarkers. One blood draw.
All 8 biomarkers with a short description. The laboratory reference values always lead.
Fatigue & Sleep8 biomarkers | |
|---|---|
| TSH + Free T4 (Thyroid) | Thyroid function, regulates metabolism and energy. |
| Ferritin | Iron stores, low values reduce oxygen transport. |
| Vitamin B12 | Plays a role in energy metabolism and nerve function. |
| Folic Acid (B11) | Complementary to B12 for blood formation and energy. |
| Vitamin D | Plays a role in energy, muscle function, and immunity. |
| Cortisol (morning) | Stress hormone with a strong diurnal rhythm. |
| Magnesium | Plays a role in muscle relaxation and nerve function. |
| Full Blood Count | Insight into red and white blood cells and platelets. |
With every result, your personal report includes an explanation from our doctor.
Three steps to your report
- 1
Order online
Choose Fatigue & Sleep and your collection point. You receive your lab form by email.
- 2
Blood draw at a collection point
At one of the 1000+ collection points, no referral needed.
- 3
Results with an explanation from our doctor
Typically within 2 working days, reviewed by a BIG-registered doctor.
Insight, explained by our doctor.
A personal report with an explanation from our doctor, and all your results in one secure place.
Personal report
With an explanation from our doctor for your results. Reference values always come from the laboratory.
Reviewed by a doctor
Every result reviewed by a BIG-registered doctor, measured in ISO 15189 accredited laboratories.
Your dashboard
All results in one secure place. Your progress visible with every test.
Do I need to fast?
Yes, for this package we advise fasting for 8 hours, particularly for magnesium and cortisol. Drink water only during this period.
What is the best time to have blood drawn?
We recommend having your blood drawn in the morning between 7 and 10 o'clock, cortisol is at its highest then and most suitable for interpretation.
How does this compare to a GP visit?
This package gives insight into values that can also be measured by your GP. You can use the report for your own insight or discuss it with your GP.
What if I take thyroid medication?
Thyroid medication affects TSH and T4. Please let us know so we can adjust the interpretation accordingly.
What if I take supplements?
Some supplements (especially high-dose B12 and biotin) can affect measurements. For a baseline measurement, we recommend stopping 1 to 2 weeks beforehand if possible.
How often should I have this measured?
A single measurement is sufficient for initial insight. For follow-up or when starting lifestyle interventions, re-testing after 3 to 6 months is common.
What if I want more specific markers?
Through Bloodworks Select you can add markers such as homocysteine, Holo-TC (active B12), or testosterone.
How quickly do I receive my results?
Typically within 2 working days of blood draw.
Ready for insight into your health?
Fatigue & Sleep · 8 biomarkers · results typically within 2 working days