Xanax®
14 days
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Cause for Rejection: Gel-barrier tube
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Monitors blood levels of alprazolam for compliance or toxicity. Common in therapeutic drug monitoring.
Serum or Plasma
2 mL
Red-top tube or green-top (heparin) tube
No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.
Do not use a gel-barrier tube.
| Temperature | Period |
|---|---|
| Room temperature | 8 days |
| Refrigerated | 8 days |
| Frozen | 19 days |