LIDOCAINE, serum (087-0478)
Synonyms: Xylocaine
CPT 4 Code: 80176
Test Order Mnemonic: LIDOCAINE
Lab: Clinical Chemistry
Request Form: Special Chemistry Form 2
Collection: Routine venipuncture. Blood should be
collected 12 hours after initiating lidocaine therapy, daily during lidocaine treatment
and at least every 12 hours in patients with hepatic insufficiency.
Storage Instructions: Refrigerate (2-8C). Centrifuge
the specimen, remove serum from red cells within 4 hours of collection; refrigerate serum.
Causes for Rejection: Blood collected in a SST/gel
separator tube
Availability: Samples are received 24 hours per day
at Sample Management, Room 5.136 McCullough.
Turnaround Time: Routine: 24 hours; STAT: 1 hour
Specimen: Blood
Volume: 3 mL blood
Minimum Volume: 0.5 mL serum
Container: Red-topped tube. Do not use
SST/gel separator tube.
Reference Ranges: Therapeutic Range: 1.5-5.0 mcg/mL
Critical Values: Potential Toxicity: > 10 mcg/mL
Revised April 2007 by P. Harris
