Unknown Substance Analysis

CPT: Call client services.
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Expected Turnaround Time

10 - 14 days


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


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)


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

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