Constantly tired? Find the causes with a blood test.
Ständig müde? Diese Blutwerte lohnt sich zu prüfen
- Eisen & Ferritin
- Eisenmangel ist eine der häufigsten Ursachen für Müdigkeit – besonders bei Frauen.
- Vitamin D
- Niedrige Werte, vor allem in den Wintermonaten, machen oft müde und antriebslos.
- Vitamin B12
- Ein Mangel – häufig bei veganer Ernährung oder im höheren Alter – kann stark erschöpfen.
- Schilddrüse (TSH)
- Eine Unterfunktion führt typischerweise zu Müdigkeit, Frieren und Antriebslosigkeit.
- Blutzucker (HbA1c)
- Ein gestörter Zuckerstoffwechsel und Blutzuckerschwankungen kosten Energie.
- Entzündungswerte (CRP)
- Stille Entzündungen zehren unbemerkt an der Energie.
Warum bin ich ständig müde?
Anhaltende Müdigkeit hat selten nur eine Ursache. Neben Schlafmangel und Stress stecken häufig messbare Auslöser dahinter – ein Eisen- oder Vitaminmangel, eine Schilddrüsenunterfunktion oder ein gestörter Zuckerstoffwechsel. Der Vorteil: Genau diese Werte lassen sich mit einem Bluttest gezielt prüfen. So finden Sie heraus, ob hinter Ihrer Erschöpfung ein konkreter Wert steckt, an dem sich arbeiten lässt – statt weiter zu rätseln.
Häufige Fragen zu Müdigkeit und Erschöpfung
Warum bin ich ständig müde und schlapp?
Häufige Ursachen sind Eisenmangel, ein Vitamin-D- oder B12-Mangel, eine Schilddrüsenunterfunktion, Blutzuckerschwankungen sowie Schlafmangel und Dauerstress. Weil die Anzeichen unspezifisch sind, bringt erst ein Bluttest Klarheit, welcher Wert dahintersteckt.
Welche Blutwerte sollte ich bei Müdigkeit testen lassen?
Sinnvoll sind Ferritin (Eisenspeicher), Vitamin D, Vitamin B12, die Schilddrüsenwerte (TSH), ein Blutbild sowie der Langzeitblutzucker HbA1c und der Entzündungswert CRP. Diese Werte decken die häufigsten körperlichen Ursachen von Müdigkeit ab.
Kann ein Vitaminmangel müde machen?
Ja. Vor allem ein Mangel an Vitamin D, Vitamin B12 oder Eisen äußert sich häufig zuerst durch Müdigkeit, Konzentrationsprobleme und Abgeschlagenheit – oft lange, bevor andere Beschwerden auffallen.
Constantly tired?
✔ Medically examine causes
✔ Nutrients & Analyze hormones
✔ Objectively assess burden
How does chronic fatigue develop?
Fatigue is not an independent condition, but a symptom. If exhaustion persists for weeks or months, there is often more behind it than stress or lack of sleep.
The body signals that there is an imbalance – for example, in the hormone balance, nutrient status, or metabolism. A targeted blood test can help make these causes visible.
Why am I constantly tired?
Chronic fatigue can have various medical causes:
1. Thyroid disorder
An underactive thyroid slows down metabolism. Typical symptoms include exhaustion, weight gain, and lack of drive.
2. Iron deficiency
Iron is crucial for oxygen transport in the blood. A deficiency can lead to lack of energy and reduced performance.
3. Chronic stress
A disrupted cortisol level can affect sleep, recovery, and energy balance.
4. Testosterone deficiency (in men)
A low testosterone level can promote fatigue, muscle loss, and reduced resilience.
5. Nutrient deficiencies
Vitamin D, Vitamin B12, or folic acid are essential for energy production and the nervous system.
Typical accompanying symptoms
😴 Persistent fatigue despite sleep
🧠 Concentration problems
⚖️ Weight gain or loss
🌙 Sleep disturbances
😔 Mood swings
💪 Reduced performance capacity
Blood test for home
✔ Analysis in specialized laboratories
✔ Digital report transmission
✔ Monitoring of your values
✔ Understandable interpretation
This is how Probatix works
1. Take sample
2. Send to lab
3. Receive result
FAQ: Frequently Asked Questions about Stress, Burnout, and Cortisol Levels
CRP value — what is it and why is it important?
CRP value — what is it and why is it important?
The CRP value (C-reactive protein) is an inflammation marker in the body. It indicates whether there is an acute or chronic inflammation and is often used to assess the severity and cause of inflammations.
How is the CRP value measured?
How is the CRP value measured?
The CRP value is determined by a blood test. A simple blood sample is sufficient to measure the CRP value and detect possible inflammatory processes in the body.
What reference ranges are there for the inflammatory marker (CRP value)?
What reference ranges are there for the inflammatory marker (CRP value)?
A normal CRP level is below 5 mg/L. Values between 5 and 10 mg/L indicate a mild inflammation, while values above 10 mg/L may suggest an acute inflammation or infection. A high CRP level is often a sign of a severe inflammation.
What can elevated CRP levels mean?
What can elevated CRP levels mean?
An elevated CRP level indicates an inflammatory reaction in the body. If the CRP level is elevated, it can have several causes. Possible causes include bacterial infections, autoimmune diseases, injuries, or chronic inflammations such as arthritis. Cardiovascular diseases can also be associated with slightly elevated CRP levels.
What symptoms can indicate a high CRP level?
What symptoms can indicate a high CRP level?
Since the CRP value is only a marker for inflammation, it does not itself indicate specific symptoms. However, symptoms of inflammation can include fever, pain, swelling, fatigue, and redness. A CRP test is often performed to clarify the cause of these symptoms.
What is the difference between CRP and hs-CRP?
What is the difference between CRP and hs-CRP?
The hs-CRP (high-sensitivity CRP) measures very low CRP levels and is often used to assess cardiovascular risk. While the regular CRP test measures acute inflammation, the hs-CRP test shows subtle inflammation that may be associated with a higher risk of heart disease.
What can I do to lower my inflammation marker (CRP level)?
What can I do to lower my inflammation marker (CRP level)?
A healthy lifestyle can help lower CRP levels. Regular exercise, an anti-inflammatory diet, adequate sleep, and stress management contribute to reducing inflammation. In cases of acute inflammation, treatment with medication may be necessary.
When should the CRP level be checked?
When should the CRP level be checked?
The CRP level should be checked if there is suspicion of an acute or chronic inflammation or if symptoms such as fever, joint pain, or fatigue occur. The hs-CRP level can also be helpful in assessing the risk of cardiovascular diseases.
Can medications affect the CRP level?
Can medications affect the CRP level?
Yes, some medications can affect the inflammatory marker (CRP level). Anti-inflammatory drugs, such as corticosteroids or non-steroidal anti-inflammatory drugs (NSAIDs), can lower the CRP level. Before a CRP test, the doctor should be informed about all medications taken.
How long does it take for the CRP level to normalize after an inflammation?
How long does it take for the CRP level to normalize after an inflammation?
The CRP level usually decreases within a few days after the cause of the inflammation has been treated. However, in chronic cases, the CRP level may remain elevated for a longer period, and regular monitoring may be necessary.








