Methorphan
14 days
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
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Cough suppressant; blood/urine level can be used in 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.
This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.
| Temperature | Period |
|---|---|
| Room temperature | 3 days |
| Refrigerated | 14 days |
| Frozen | 14 days |