LEUKOTRIENE E4, URINE

Specimen Required
Send 4.0 mL urine (1.0 mL minimum) refrigerated in a screw-capped plastic urine container. 24 hour or random urine collection is acceptable. No preservative.

Alternate Specimen
Urine with preservative: 50% acetic acid, Na2CO3, Toluene, Boric acid

Methodology
Liquid Chromatography - Tandem Mass Spectrometry

Stability
Room Temperature: 24 hours; Refrigerated 7 days; Frozen: 30 days

Reference Range
< or = 104 pg/mg creatinine

Performed
Tuesday, Friday

Turnaround Time4-8 days
Test CodeLTE4
CPT-4 Code (s)
82542
LOINC Codes
Leukotriene E4, Urine   33343-5  

Warde
Medical
Laboratory