Eosinophil Cationic Protein 
Mnemonic MISC
CPT 83520
Test Code 3509949
Synonyms ECP
Test Includes  
Specimen serum
Volume 1.0 mL
Container SST Tube only
Special Instructions  
Specimen Prep Must be drawn in an SST tube. Allowed to clot for minimum of 60 minutes +/- 5 minutes (not to exceed 120 minutes). Tube must be centrifuged before the total 120 minutes have elapsed.
Storage Refrigerate
Transport Temp Refrigerated
Stability Rm Temp  48 hours off red cells
Stability Refrig  7 days off red cells
Stability Frozen  2 weeks; stable for 3 freeze thaw cycles
Methodology Enzyme Immunoassay
Rejection Criteria   
Reference Value Less than 32.5 ng/mL 
Performed/TAT One time per week   5-7 days    
Comments For investigational use only