ARUP's Laboratory Test Directory

Drugs of Abuse Confirmation/Quantitation - Propoxyphene & Metabolite - Serum or Plasma : 0091363

Mnemonic: PROPOXY SP

Methodology: Liquid Chromatography-Tandem Mass Spectrometry
Performed: Sun-Sat
Reported: 1-4 days
Specimen Required: Collect:  Two 7 mL gray (sodium fluoride/potassium oxalate).  Also acceptable: plain red, green (sodium heparin), lavender (EDTA), or pink (K2EDTA).

Transport:  4 mL serum or plasma at 2-8°C. (Min: 2 mL) Submit specimen in an ARUP Standard Transport Tube.

Remarks:  Remove serum/plasma from cells ASAP.

Unacceptable Conditions:  Specimens exposed to repeated freeze/thaw cycles. Separator tubes and plasma or whole blood from lt. blue (sodium citrate).

Stability:  After separation from cells: Ambient: 1 week; Refrigerated: 2 weeks; Frozen: Frozen: 3 years
Reference Interval:
By report
Interpretive Data: Drugs covered: propoxyphene and metabolite (norpropoxyphene - qualitative only)

Positive cutoff: 10 ng/mL

The absence of expected drug(s) and/or drug metabolite(s) may indicate non-compliance, inappropriate timing of specimen collection relative to drug administration, poor drug absorption, or limitations of testing. The concentration value must be greater than or equal to the cutoff to be reported as positive. Interpretive questions should be directed to the laboratory.

For medical purposes only; not valid for forensic use.
CPT Code(s): 80299
 
 

 

 

 
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