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Lidocaine
Test CodeLIDOQ
CPT Codes
<p>80176</p>
Preferred Specimen
Patient Preparation: Collect as a trough just prior to next dose.
Specimen Type: Serum
Collection Container/Type
Preferred: Red top
Acceptable: Plasma collected in: EDTA (lavender-top) tube, sodium heparin (green-top) tube, or sodium fluoride/oxalate (gray-top) tube.
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Patient Preparation
Collect as a trough just prior to next dose
Minimum Volume
0.2 mL
Other Acceptable Specimens
Plasma collected in: EDTA (lavender-top) tube, sodium heparin (green-top) tube, or sodium fluoride/oxalate (gray-top) tube
Instructions
Collect as trough prior to next dose.
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 5 days
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Serum Separator Tube (SST®)
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Mon-Sat; Report available: 1-2 days
Report Available
1-2 days
Reference Range
1.5-5.0 mg/L
Clinical Significance
Lidocaine direct injection or infusion is used in the emergency treatment of ventricular arrhythmias caused by acute myocardial infarction, open-heart surgery. It is also used for topical anesthesia administered as a gel or by injection. Lidocaine levels are monitored to assure adequate therapeutic levels are achieved and to avoid toxicity.
Performing Laboratory
Quest Diagnostics Nichols Institute 14225 Newbrook Drive Chantilly, VA 20153
Last Updated: February 17, 2023