3 - 9 days
Test Updated:
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Test Overview
LTE4: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
AACT: Enzymatic Colorimetric Assay
Evaluating patients suspected of having systemic mastocytosis
Identification of aspirin sensitivity in patient respiratory diagnoses
< or equal to 104 pg/mg creatinine
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen Requirements
Send urine in a plastic cup/container to Specimen Processing refrigerated with no preservative.