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Orderable Name EDN Eosinophil Derived Neurotoxin, Serum


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Container/Tube:

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Centrifuge and aliquot serum into a plastic vial within 12 hours of collection. Serum cannot sit on either gel or cells for longer than 12 hours.


Useful For

Evaluating patients suspected to have a condition associated with eosinophilia or hypereosinophilia

 

Evaluating patients with elevated peripheral blood eosinophil counts

 

Managing patients with elevated eosinophil-derived neurotoxin in the context of eosinophil-associated diseases

Method Name

Fluorescence Enzyme Immunoassay (FEIA)

Specimen Type

Serum

Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 7 days
  Frozen  21 days

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK
Heat-treated specimen Reject
If serum is on cell pellet or gel for >12 hours Reject

Reference Values

<70 mcg/L: Normal

70-99 mcg/L: Borderline

≥100 mcg/L: Elevated

Reference values apply to all ages.

Day(s) Performed

Tuesday

Report Available

2 to 8 days

CPT Code Information

83520