Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Assessing toxicity or abuse.
Propoxyphene: 100 - 400 ng/mL; Norpropoxyphene: 200 - 2200 ng/mL; Propoxyphene + Norpropoxyphene: 400 - 3000 ng/mL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Days Test Performed
Soft Order Code
Mayo FPPOX (57140) (MedTox 108)
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Offsite Collection Instructions
Collect blood in a red top or green top tube; do not use SST or PST tube. Centrifuge, aliquot serum or plasma into plastic vial and refrigerate.
SST or PST tube not acceptable.
5 mL serum or plasma
2 mL serum or plasma
Test sent to Mayo Medical Laboratories; performed by MedTox Laboratories.