Unknown Substance Analysis

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Test Details

Use

Identify drugs in powders, liquids, residues, etc

Methodology

Immunoassay (IA); gas chromatography/mass spectrometry (GC/MS); liquid chromatography with time-of-flight mass spectrometry (LC/TOF)

Specimen Requirements

Specimen

Unknown substance or residue

Volume

2 mL or 50 mg

Minimum Volume

Trace or residue

Container

Screw-top container

Storage Instructions

Maintain specimen at room temperature.

Causes for Rejection

Urine from preservative tube

LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
791358 Unknown Substance Analysis 16793-2 791362 Unknown Substance Analysis 16793-2
791358 Unknown Substance Analysis 16793-2 791359 Unknown Substance Analysis N/A

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CPT Statement/Profile Statement

The LOINC® codes are copyright © 1994-2017, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf