Wellness . Symptoms guide
Inflammation Marker Testing (CRP, ESR)
C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) are simple, well-established markers of inflammation. They are useful when investigating unexplained fatigue, joint symptoms, post-viral recovery, or for getting a baseline before starting an anti-inflammatory diet or treatment plan.
This patient information is being clinically reviewed by our team. The factual content draws on UK guidance (NHS, NICE, British Association of Dermatologists, British Society for Sexual Medicine where cited).
What this might be
- Post-viral inflammation. Persistent low-grade CRP elevation after COVID or other viral illness.
- Autoimmune disease. Raised inflammation markers warrant further investigation.
- Chronic infection. Hidden infection sources.
- Cardiovascular risk. CRP is a known marker of cardiovascular risk.
Common features that suggest this
- Persistent fatigue
- Joint or muscle aches
- Post-viral recovery monitoring
- Baseline before lifestyle change
Recommended tests
Same-day appointments at our Harley Street clinic, results clinician-reviewed.
Need a marker not in these panels? Build a custom panel and a GMC-registered clinician will design one for you.
Testing advice
No fasting required. CRP and ESR are included in the Advanced Hair and Hormone Check and can be added to any custom panel.
Common questions
What does a high CRP mean?
Acute inflammation, infection, or sometimes chronic conditions. Modestly raised levels are common after a recent illness.