What is CRP?
your fast-acting inflammation signal
CRP rises rapidly in infection and inflammation. It is used primarily to detect ongoing acute inflammation.
CRP is produced in the liver in response to inflammatory signals. It rises within hours of infection and falls as the inflammation settles. It is a blunt marker - it tells you something is happening, but not what.
Test facts
- Unit
- mg/L
- Sample
- Serum
- Fasting
- No fasting needed
- Turnaround
- 1 day
What does low CRP mean?
Low CRP is the expected baseline and means no active acute inflammation.
What does high CRP mean?
High CRP indicates ongoing inflammation or infection and needs clinical context to interpret.
Panels that measure CRP
- Heart & Vessels
- Inflammation
More markers in the same area
Launching in Stockholm in 2026.
Want to know when you can order?
This is general information about the marker, not an assessment of your values and not medical advice. Last updated: May 2026.