D,L-Methamphetamine, Urine

CPT: 80324; 80374
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Test Details

Test Includes

D-methamphetamine; L-methamphetamine

Use

Drugs of abuse testing; determination of prevalent methamphetamine isomer to differentiate illicit use

Methodology

Mass spectrometry (MS)

Specimen Requirements

Specimen

Urine

Volume

20 mL

Container

Use plastic urine drug bottle and tamper-evident seal for forensic specimen. Collection kits are available by request from the laboratory.

Collection

Urine temperature monitoring is recommended for samples to be tested for medicolegal purposes.

Storage Instructions

Maintain specimen at room temperature. If arrival extends beyond seven days, then refrigerate.

Causes for Rejection

Quantity not sufficient for analysis; improper specimen (serum, plasma, blood); incomplete chain-of-custody documentation; incomplete specimen identification

Clinical Information

Special Instructions

This test is only performed if methamphetamine is positive (See test 071282 to determine whether methamphetamine is present.). Chain-of-custody documentation is required for samples submitted for preëmployment, random employee testing, and forensic purposes. For other applications, use the standard test request form. Please mark chain-of-custody test number on the test request form.

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
714766 D/L Methamphetamine 714769 D Methamphetamine % 12477-6
714766 D/L Methamphetamine 714770 L Methamphetamine % 15404-7
714766 D/L Methamphetamine 714771 D/L Methamphetamine N/A

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