Xylocaine®, Lidoderm®, Topicaine®
7 days
Immunoassay
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Determines blood lidocaine levels. Used in toxicity monitoring or therapeutic dosing.
Serum or Plasma
1 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 | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |