What are the reference intervals for ECP?

ImmunoCAP ECP

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The reference intervals for ECP
Normal values studied in adults show a geometric mean of 5.5 µg/l and a 95th percentile of 13.3 µg/l (1). Studies on normal values for children show the same levels as for adults* (1-2).
 
Values over 15 µg/l should be considered elevated for both adults and children (> 2 years). However, patients should be their own control during treatment follow-up.
 
* Studies performed at Phadia, Uppsala, Sweden.

References
  1. Koller DY, Herouy Y, Götz M, Hagel E, Urbanek R, Eichler I: Clinical value of monitoring eosinophil activity in asthma. Arch Dis Child 1995; 73;413-417.
  2. Sorva R, Metso T, Turpeinen M, Juntunen-Backman K, Björksten F, Haahtela T. Eosinophil cationic protein in induced sputum as a marker of inflammation in asthmatic children. Pediatr Allergy Immunol 1997;8:45-50