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Test Code 1981 Lidocaine, Serum

Performing Laboratory

Barnes-Jewish Hospital Laboratory


Enzyme Immunoassay

Literature Reference:

Package insert: Syva® Emit® Lidocaine Assay. Siemens Healthcare Diagnostics Ltd.,

Newark, DE 19714., 5/2011

Specimen Requirements

Specimen Type: Serum

Container/Tube: Plain red top-Separator gel tube is not acceptable.

Specimen Volume: Full tube


Day(s) Test Set Up

Monday through Sunday

Turnaround Time:
STAT: 1 hour after receipt in laboratory 
Routine: 2-4 hours after receipt in laboratory

Reference Values

Therapeutic concentration: 1.5-5.0 mcg/mL

Critical result (automatic call-back): ≥6.0 mcg/mL

Literature Reference:

Waldman SA, Terzic A. Pharmacology and therapeutics, principles to practice. Saunders Elsevier, Philadelphia, PA: 2009.

Test Classification and CPT Coding


Additional Information

For BJH Laboratory Use Only
Alternate Tube:

1 dark green-top (lithium heparin) tube
1 gray-top (potassium oxalate) tube
Analyte Stability:

Specimens should be centrifuged and analyzed upon receipt. Unprocessed blood is stable for 24 hours, ambient or refrigerated (2-8ºC). Separated serum/plasma is stable for 24 hours ambient, or 7 days refrigerated. For longer storage, specimens should be frozen (-15 to -25ºC). Freeze samples only once and mix thoroughly after thawing.

Laboratory Processing Instructions:

Test performed in BJH Core Lab.  Processed by automated line for delivery to the Cobas 8000. Completed specimens are stored refrigerated for 5 days.

Specimen Transport Temperature

Ambient <24 hours/Refrigerated <24 hours OK

LOINC Code Information

Name LOINC Code
Lidocaine, Serum 3714-3