Abbrev Code:XMISC   
Order Code:LAB4909Order Name:Propoxyphene Level
Synonyms:Darvocet; Wygesic; Darvon
Methodology:Liquid chromatography/Tandem mass spectrometry
CPT Codes: 80367 x1
Test Includes:Propoxyphene and Norpropoxyphene
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 7 days.

Collection Instructions

Optimal Volume:4 mL
Minimum\Peds Volume:1.4 mL
Container:Red (no gel)
Alternate Containers: Green (lithium heparin, no gel), Green (sodium heparin, no gel)
Collection Instructions:Trough levels are the most reproducible.

Processing and Shipping

Specimen Processing:Centrifuge and aliquot 2 mL, 0.6 mL minimum. Store at room temperature.
Shipping Instructions:Ship at room temperature.
Stability:3 days at room temperature; for longer storage refrigerate or freeze.
Test Performed at or Referral Lab Lab Sendouts  (MedTox)
Referral Lab number:108


Critical Range:Propoxyphene and Metabolite: Greater than or equal to 5000 ng/mL
Reference Range:Propoxyphene: 100-400 ng/mL; Norpropoxyphene: 200-2200 ng/mL; Propoxyphene & metabolite: 300-2600 ng/mL

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