Laboratory: Clinical Biochemistry
Test Name:
LIDOCAINE - (S)
Test Code: LIDO
Clinical Information:
This test measures the level of lidocaine in serum. It is indicated for the assessment of toxicity and dosage during the management of ventricular arrythmias following myocardial infarction or during cardiac surgery.

Alternate name: Xylocaine.
Collection Devices:
Preferred Device:
Alternate Device:
1 - Serum Separator (SST) Tube(s) - Full Tube Collection  - Serum collected in GEL tube is also acceptable
Specimens should be centrifuged and aliquoted within 2 hours of collection.
Serum collected without gel preferred. 
Specimen Required:
Serum: 2.0 mL
Pediatric Serum: 0.5 mL

Specimens should be centrifuged and aliquoted within 2 hours of collection.
Serum collected without gel preferred. 
Referral:
Serum: 2.0 mL

Specimen should be centrifuged and aliquoted within 2 hours of collection.
Slight hemolysis will interfere.  Reject if gross hemolysis.  Store and send frozen to Mayo Medical Laboratories.
 
Requisition:
Reference Values:
Therapeutic:  1.5 - 5.0 mcg/mL
Toxic value:  > 6.0 mcg/mL
Availability:
Within 1 Week
Test performed at Mayo Medical Laboratories
See Also:
More Information:
Slight hemolysis will interfere.  Reject if gross hemolysis.  Centrifuge and aliquot within 2 hours of collection.  Store and send frozen to Mayo Medical Laboratories.  Test ID:  LIDO