CRP test

C-reactive protein (CRP) is a protein synthesised in the liver in response to an increase in plasma…

3,40 €
CRP test
  • Separate parameter

CRP test

3,40 €

C-reactive protein (CRP) is a protein synthesised in the liver in response to an increase in plasma concentration of IL-6 in particular, and to a lesser extent other pro-inflammatory cytokines. It is one of the acute phase reactants and is part of the immune defence system. It activates the complement system, triggering opsonisation (labelling) and phagocytosis (engulfment) of both pathogens and infected cells. Although it is a non-specific marker, it is a useful laboratory parameter in inflammation.  A relatively small inflammatory reaction is sufficient to stimulate its secretion.

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What interests you about the CRP test?

What will the CRP test show?

The CRP is used to quantitatively determine the concentration of C-reactive protein in the blood. This is one of the so-called acute-phase proteins, which are involved in the body's natural immune response. CRP measurement is most commonly used as a measure to distinguish viral from bacterial infections (12).

(12) Mouliou DS, Diseases. 2023 Sep 28;11(4):132.

What will the CRP test show?

The CRP test serves to quantitatively determine the concentration of C-reactive protein in the blood. It belongs to the so-called acute phase proteins that participate in the body's natural immune response. CRP measurement is most often used as a measure to distinguish viral from bacterial infection (12).

(12) Mouliou DS, Diseases. 2023 Sep 28;11(4):132.

What does elevated CRP mean?

A rapid rise in CRP (above 40 mg/l) accompanies a bacterial infection, less usually also a fungal infection. In viral infection, on the other hand, the CRP level rises relatively little (10-40 mg/l). Determining the CRP concentration thus helps the doctor decide whether to start antibiotic treatment (12).

(12) Mouliou DS, Diseases. 2023 Sep 28;11(4):132.

How long does CRP take to fall?

Successful treatment with antibiotics is manifested by a sharp drop in the CRP level; in case of unsuccessful treatment (e.g. trying to cure a viral infection with antibiotics), on the contrary, it persists. The CRP concentration also reveals the risk of postoperative infection - if it does not decrease within three days of the procedure, there is probably an infection or inflammation in the wound.

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You take the CRP test as part of the following tests