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Relief of pain adjunct to general or regional anesthesia moderate to moderately-severe pain. Indications for monitoring include the following: to confirm or identify suspected drug toxicity in chronic use, therapeutic misadventure, or accidental or intentional acute overdose; to aid in the identification of an unknown drug ingested in unknown quantities, drug identification and/or quantitation may be performed as an adjunct for patient management; to monitor selected patient groups at greater risk for analgesic drug toxicity or drug-to-drug interaction; to confirm complete drug absorption and adequate drug elimination as an adjunct to overdose management.
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Serum, plasma, or whole blood
Red-top tube, lavender-top (EDTA) tube, or green-top (heparin) tube. Do not use a gel-barrier tube. The use of gel-barrier tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage time, the decrease in drug level due to absorption may be clinically significant.
Separate serum or plasma within two hours of collection and transfer to a plastic transport tube.
Maintain specimen at room temperature.
Causes for Rejection
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|071543||Fentanyl and Metabolite||071539||Fentanyl||ng/mL||3636-8|
|071543||Fentanyl and Metabolite||071541||Norfentanyl||ng/mL||11074-2|