C-reactive protein

C-reactive protein (CRP) is a protein found in blood plasma, whose levels rise in response to inflammation. Its origin is in the liver.

CRP related to ME/CFS
A 2019 study in Norway found that the level of the inflammatory marker high-sensitivity CRP (hsCRP) levels were significantly higher for both the CFS and the fibromyalgia groups compared to healthy controls when adjusting for age, smoking, and BMI.

Evidence

 * 2018, C-Reactive Protein Response in Patients With Post-Treatment Lyme Disease Symptoms Versus Those With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
 * 2019, Patients with Fibromyalgia and Chronic Fatigue Syndrome show increased hsCRP compared to healthy controls

Learn more

 * Wikipedia - C-reactive protein