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Test Code LID Lidocaine, Serum

Additional Codes

Epic Ordering Code LAB3041485
NBS code LBC13321
Service code 36601

Reporting Name

Lidocaine, S

Specimen Type

Serum Red


Specimen Required


Supplies: Sarstedt Aliquot Tube 5 mL (T914)

Collection Container/Tube: Red top (serum gel/SST are not acceptable)

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL Serum

Collection Instructions: Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial.


National University Hospital-Singapore Note:

NUH Outreach Laboratories:
Specimen Requirements
Submit the following:
Container: Red Top
Processing Requirements
Centrifuge and aliquot serum into a Mayo plastic tube within 2 hours of collection.
Specimen type: Serum
Volume: 0.5 mL
Storage/transport requirements: Refrigerated

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-Cardiovascular Test Request (T724)

-Therapeutics Test Request (T831)

Specimen Minimum Volume

Serum: 0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Red Refrigerated (preferred) 14 days
  Ambient  14 days
  Frozen  14 days

Reject Due To

Gross hemolysis Reject

Method Name

Enzyme-Multiplied Immunoassay Technique (EMIT)

Day(s) Performed

Monday through Saturday

Report Available

Same day/1 to 2 days
National University Hospital-Singapore Note:

Please note that this is a referral test requiring transport to the external testing facility and an additional 3-5 days is required.

Reference Values

Therapeutic: 1.5-5.0 mcg/mL

Critical value: >6.0 mcg/mL

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Assessing optimal lidocaine dosing during the acute management of ventricular arrhythmias following myocardial infarction or during cardiac manipulation such as surgery

 

Assessing potential lidocaine toxicity

Secondary ID

8382

CPT Code Information

80176

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LID Lidocaine, S 3714-3

 

Result ID Test Result Name Result LOINC Value
8382 Lidocaine, S 3714-3

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.
National University Hospital-Singapore Additional Information:

Last updated on 10/09/2026