Blood calprotectin in children with juvenile idiopathic arthritis: relationship to flare development after discontinuation of treatment.

Objectives: The study aim was to prospectively evaluate the relationship between disease flare development in children with juvenile idiopathic arthritis (JIA) after discontinuation of treatment and serum calprotectin levels (MRP8/14).

Material And Methods: Determination of blood serum level of calprotectin was performed in 54 patients with inactive JIA from various regions of Ukraine. The inclusion criterion was the existence of an inactive state of the disease in children with JIA for at least 6 months.