CRP

A fast blood marker of inflammation.

InflammationOctober 11, 20261 min read

CRP: thin glass ring standing upright on a dark reflective surface — Image generated with AI.

CRP rises within hours of inflammation. Most labs expect <5 mg/L (some <10 mg/L).

Valid only when there is no infection; above 10 mg/L it is repeated in 2 weeks (AHA/CDC).
hs-CRP (mg/L)	Cardiovascular risk (in healthy people)
<1	Low
1–3	Average
>3	High

Sources

Pearson TA et al., Circulation 2003 — Markers of Inflammation and Cardiovascular Disease (CDC/AHA)

General information only; not diagnosis or treatment. Review your results with your clinician.