Skip Ribbon Commands
Skip to main content
Sign In
Navigate Up

22827 Lidocaine, Serum

Lidocaine, Serum
Test Code: LID
Synonyms/Keywords
Xylocaine​
Useful For
Lidocaine is mainly utilized in the clinical setting as an anti-arrhythmic drug.  It is used to normalize irregular heartbeat and prevent cardiac malfunction and arrest.  Examples include: acute treatment of ventricular arrhythmia’s following MI, or during cardiac manipulations (i.e. heart surgery).  Lidocaine can also be used as a local anesthetic.​
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Serum/ Plasma​ Red Top (RTT)​ Lithium or Sodium-heparin Green Top (GTT)
EDTA Lavender Top (LTT)​		 0.5 mL​ 0.2 mL​ ​
Collection Processing Instructions
Indicate collection time.​
Specimen Stability Information
Specimen Type Temperature Time
Serum/ Plasma​ Refrigerate​ 7 days​
​ Frozen​ 1 year​
Rejection Criteria
Specimens collected in gel separator tubes
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Sunday​ Less than 2 hours​ Homogeneous enzyme immunoassay/ Beckman DXC​
Test Information
Sampling time for adequacy early in therapy: 5 - 10 hours after start of therapy, or 30-120 minutes post loading dose. If toxicity suspected, obtain specimen as close to episode (diminished mental status, QRS widening) as possible.
Time to steady state: 5 - 10 hours.
Time to peak level: 30-120 minutes.​
Reference Range Information
Performing Location Reference Range
Marshfield​ Therapeutic: 1.2-5.0 ug/mL
See Critical Value List for list of current critical values​
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
80176 ​ ​ ​ ​ ​
Synonyms/Keywords
Xylocaine​
Ordering Applications
Ordering Application Description
​Centricity ​Lidocaine
​Cerner ​Lidocaine Level
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No​ Serum/ Plasma​ Red Top (RTT)​ Lithium or Sodium-heparin Green Top (GTT)
EDTA Lavender Top (LTT)​		 0.5 mL​ 0.2 mL​ ​
Collection Processing
Indicate collection time.​
Specimen Stability Information
Specimen Type Temperature Time
Serum/ Plasma​ Refrigerate​ 7 days​
​ Frozen​ 1 year​
Rejection Criteria
Specimens collected in gel separator tubes
Useful For
Lidocaine is mainly utilized in the clinical setting as an anti-arrhythmic drug.  It is used to normalize irregular heartbeat and prevent cardiac malfunction and arrest.  Examples include: acute treatment of ventricular arrhythmia’s following MI, or during cardiac manipulations (i.e. heart surgery).  Lidocaine can also be used as a local anesthetic.​
Reference Range Information
Performing Location Reference Range
Marshfield​ Therapeutic: 1.2-5.0 ug/mL
See Critical Value List for list of current critical values​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield​ Monday through Sunday​ Less than 2 hours​ Homogeneous enzyme immunoassay/ Beckman DXC​
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
80176 ​ ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.