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PROPX
PROPOXYPHENE SCREEN WITH GC-MS CONFIRMATION, URINE

Test Code PROPX 
Test PROPOXYPHENE SCREEN WITH GC-MS CONFIRMATION, URINE 
Methodology Enzyme Immunoassay (EIA)
Gas Chromatography-Mass Spectrophotometry (GC-MS), if indicated 
Description The screening assay detects propoxyphene in urine. If the propoxyphene screen is > = 300 ng/mL, the major metabolite, norpropoxyphene, will be confirmed by GC-MS at an additional charge.

THIS TEST IS INTENDED FOR CLINICAL MONITORING AND MANAGEMENT OF PATIENTS. IT IS NOT INTENDED FOR NON-MEDICAL USE SUCH AS EMPLOYMENT OR FORENSIC TESTING.

Note: Specific gravity, pH, creatinine and oxidants will be performed and reported at no additional charge to identify potential adulteration of the urine specimen. 

Specimen 25 mL (10.0 mL minimum) from a random urine collection in a non-sterile urine container. Send specimen refrigerated. 
Reference Values Not Detected
EIA cutoff concentration: 300 ng/mL

GC-MS cutoff concentration
-Norpropoxyphene: < 60 ng/mL 

Analytic Time 1 Day; 4 Days if positive 
Day(s) Test Set Up Monday through Friday 
CPT Code(s) 80307  qualitative, single drug class method
80367  Confirmation, if indicated
G0480 or G0481 or G0483  Drug test(s), definitive (if appropiate), if indicated