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Test Code LIDOCAINE Lidocaine Level

Important Note

Specimen should not be collected from j-tip, if lidocaine was delivered through the same tip. Contamination from lidocaine administration can cause falsely elevated results.

Clinical System Name

Lidocaine Level


None specified

Sample Requirements

Specimen: Whole Blood

Container(s): Dark Green/Sodium Heparin or Red or Gold SST, Lt. Green/Lithium Heparin Microtainer

Preferred Vol: 2 mL

Minimum Vol: 2 Lt. Green/Lithium Heparin Microtainers


Note: Avoid hemolysis.

Processing Instructions

Reject due to:

Spin: Y


Temp: -20 C

Storage location:This test is always STAT. When a Send Outs team member is present, notify them IMMEDIATELY, otherwise IMMEDIATELY send sample directly to UWMC NW 220 via Delivery Express.


Off-site collection: Spin, aliquot and freeze serum or plasma. Transport frozen.


Specimen Type Temperature Time
Serum or plasma Room temp  N
  Refrigerated  24 h
  Frozen  Y



STAT Performed TAT
Y Daily Same day


Performing Laboratory

University of Washington

Dept of Laboratory Medicine

1959 NE Pacific St, NW220
Seattle, WA 98195

Phone Number: (206) 520-4600


Department:  Send Outs


Phone Number: (206) 987-2563





Reference Range

Therapeutic 1.2 - 5.0



Method: EMIT

Analytical Volume: 0.5 mL plasma or serum


CPT Codes


Send Out Instructions

Reference Test Name: Lidocaine
Reference Test Number: LIDO
Instructions: This test is always STAT. Send all samples to UW NW 220 via Delivery Express.