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CRP (C-Reactive Protein) is a protein produced by the liver within hours of any injury, infection, or inflammatory trigger anywhere in the body. The high-sensitivity version (hsCRP) detects the low-grade, chronic inflammation that silently drives atherosclerosis, metabolic syndrome, and neurodegeneration — at levels too subtle for the standard CRP test to catch. Persistently elevated hsCRP, even at low absolute values, is one of the strongest independent predictors of a first heart attack.
Also known as: C Reactive Protein, C Reactive Protein (High Sens), C Reactive Protein (High Sensitivity), C Reactive Protein High Sens, C Reactive Protein High Sens., C Reactive Protein High Sensitivity, C Reactive Protein, High Sensitivity, C-Reactive Protein
High CRP indicates active systemic inflammation from infection, autoimmune flares, obesity, or cardiovascular damage. Persistently elevated hs-CRP above 3 mg/L independently predicts heart attack and stroke.
Standard labs flag above 10 mg/L. Functional practitioners target hs-CRP below 0.5 mg/L. Levels between 1-3 mg/L indicate smoldering inflammation.