Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

LEUKOTRIENE E4, URINE

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB1167         Geisinger Epic ID: 52593

SPECIMEN COLLECTION
Specimen type:
24-hour urine (preferred) or random urine
Preferred collection container:
Alternate Collection Container:
Sterile specimen container
Specimen required:
4 mL aliquot of 24-hour urine (preferred) or 4 mL random urine; minimum 1 mL.
Special notes:
24-hour urine: Collect urine for 24 hours with no preservative. Refrigerate upon collection.
Random urine: Collect specimen with no preservative. Refrigerate upon collection.

SPECIMEN PROCESSING
Transport temperature:
Refrigerated (cold packs).
Specimen stability:
Room temperature: 24 hours. Refrigerated: 7 days. Frozen: 30 days
Rejection criteria:
Received room temperature • Preservatives

TEST DETAILS
Additional information:
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.
CPT code(s):
82542
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Creatinine always performed but not reported.
Methodology:
Enzymatic Colorimetric
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Synonyms:
Quest test code 94444, Leukotriene, Cysteinyl Leukotriene, Systemic Mast Cell Activation, Mastocytosis, LTE4, Mast Cell Activation Syndrome
Clinical significance:
An aid to evaluate patients suspected of having systemic mastocytosis.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Set up: Tues, Fri; Report available: 2-6 days    
Performed stat? No
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