Days Set Up
Tuesday, Friday
Analytic Time

3 - 9 days

Soft Order Code
LTE4

Test Updated:

Synonyms
 
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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

LTE4: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
AACT: Enzymatic Colorimetric Assay

Test Usage

Evaluating patients suspected of having systemic mastocytosis

Identification of aspirin sensitivity in patient respiratory diagnoses

Reference Range

< 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

Collection Instructions

Send urine in a plastic cup/container to Specimen Processing refrigerated with no preservative.

Normal Volume
4 mL
Minimum Volume
1 mL

Billing Information

CPT Code
82542
Pro Fee Code
 
Insurance Auth Info
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.

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