Clonidine

Catapres®, Kapvay®

18 days

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Accredited Laboratory Partner

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Monitors clonidine levels, used in hypertension or withdrawal management.

Serum or Plasma

5 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.