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Fatigue blood test

Professionally updated: January 27, 2026

Persistent fatigue can have many causes and should be assessed by a doctor. If you experience severe fatigue, need a lot of sleep, or feel unwell despite getting enough rest, it may be relevant to investigate whether there are any underlying medical explanations.

Our Fatigue Blood Test is designed to identify common biological causes of fatigue, including anemia, vitamin deficiencies, and signs of infection or inflammation.

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Jakob Fraes
Specialist in General Medicine, Ph.D.
Read more about Fatigue blood test. Everything you should know.

What does the blood test check for?

The blood test package includes measurements of:

  • Red and white blood cells
  • Blood count and platelets
  • Infection rate
  • Vitamin B12
  • Iron and iron deposits
  • Vitamin D

These analyses provide an overview of conditions that are often associated with fatigue and reduced energy levels.

When might a blood test be relevant?

The blood test may be relevant if you:

  • Experiencing persistent or unexplained fatigue
  • Feeling unwell despite getting enough sleep
  • Suspected vitamin or iron deficiency
  • Would like a medical assessment of the causes of fatigue

The results are always assessed in conjunction with your symptoms and medical history.

How much does the fatigue blood test cost?

The price for the blood test is 2,450 kr. and will be added to the consultation price. A physical consultation of 30 minutes must be booked for this blood test. See our price list here.
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How we can help you

At Lægerne Danmark, we conduct a medical assessment of the possible causes of your fatigue. We analyze your blood tests and review the results with you, so you receive a clear and objective assessment as well as advice on any next steps.