Urinary eosinophil protein X in relation to disease activity in childhood asthma.

The clinical use of urinary eosinophil protein X (U-EPX) measurements in monitoring inflammation in childhood asthma was investigated. U-EPX and pulmonary function were assessed in 80 children with bronchial asthma and 24 healthy, age-matched controls. In addition, 14 patients with asthma were re-examined after 1-2 months.