| Methodology: |
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
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| Performed: |
Mon,Wed, Fri
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| Reported: |
1-3 days
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| Specimen Required: |
Patient Prep: Measure at least two weeks after initiating treatment. Collect specimens eight to 12 hours after oral dose.
Collect: Plain red. Also acceptable: Lavender (EDTA), pink (K2EDTA or K3EDTA), or green (sodium or lithium heparin). Also acceptable (avoid if possible): Serum separator tube or plasma separator tube (follow preparation instructions below).
Specimen Preparation: Separate serum or plasma from cells within 6 hours of collection. Transfer 2 mL serum or plasma to an ARUP Amber Transport Tube. (Min: 1 mL)
SST or PST: Serum or plasma in a gel separator tube stored at room temperature is acceptable if separated from the gel within 6 hours. Serum or plasma in a gel separator tube stored refrigerated is acceptable if separated from the gel within 2 hours.
Storage/Transport Temperature: Refrigerated.
Unacceptable Conditions: Citrated plasma. Tubes that contain liquid anticoagulant.
Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 1 week; Frozen: 1 month (avoid repeated freeze/thaw cycles)
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