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Lab Section:  Sendout Reference  
Lab Location:  Sendout
Reference Lab: Quest 
Test ID: LAB4749 
Methodology: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Schedule: Tuesday, Thursday, Saturday
Reported: 7 days
Specimen Requirements:  Collection: 4.0 mL Blood in a Red Top Tube.
Pediatric volume: 2 mL.
Plain, red-top tube
Transport: Refrigerated (cold packs).
Unacceptable conditions: Serum Separator Tubes (SSTŪ). Other body fluids. Other specimen types.
Stability: Room temperature: 72 hours Refrigerated: 14 days Frozen: 30 days


Clinical Indications: The antifungal drug posaconazole is indicated for prophylaxis of invasive aspergillus and candida infections in severely immunocompromised patients. It may also be used in the treatment of oropharyngeal candidiasis refractory to itraconazole and fluconazole. The chronic nature of fungal infections demands constant monitoring of posaconazole levels within a patient to ensure that adequate therapeutic levels of the drug are administered, absorbed and subsequently excreted.

Performing lab: Quest Diagnostics Nichols Institute 27027 Tourney Road Valencia, CA 91355-5386

Reference Interval:  See patient report or consult reference laboratory website.
CPT Code(s): 80299
Last Changed: 12/09/2016 09:55:42
Last Reviewed: 12/27/2016 01:16:13