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Arch Dis Child Educ Pract Ed. 2010 Apr;95(2):55-8. doi: 10.1136/adc.2009.174367.

How to use: C-reactive protein.

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  • 1Alder Hey Children's NHS Foundation Trust, Liverpool L12 2AP, UK.

Abstract

C-reactive protein (CRP) is an acute-phase protein that increases 4-6 h after an inflammatory trigger and peaks at 36-50 h. Levels decrease rapidly with the resolution of inflammation. CRP is generally highly elevated in invasive bacterial infections and is often used as a marker of inflammation. A single CRP level is neither sensitive nor specific enough to identify all children with serious bacterial infection. However, a raised CRP does suggest serious bacterial infection and should suggest further assessment is needed. CRP levels that fail to decrease, or continue to rise, after 48 h of antibiotic therapy suggest treatment failure. In infants with suspected neonatal sepsis, two CRP measurements 24 h apart that are <10 mg/l are useful in excluding sepsis.

PMID:
20351152
[PubMed - indexed for MEDLINE]
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