Clinics and Departments

Laboratory Services

Lab Dept:

Chemistry

Test Name:

DEMEROL LEVEL

General Information

Lab Order Codes:

DEM

Synonyms:

Meperidine; Normeperidine

CPT Codes:

82542 - Column chromatography/mass spectrometry, analyte not elsewhere specified; quantative single stationary and mobile phase

Test Includes:

Meperidine, Normeperidine levels reported in ng/mL.

Logistics

Test Indications:

Monitoring Demerol levels.

Lab Testing Sections:

Chemistry - Sendouts

Referred to:

MedTox Laboratories (MedTox Test: 67)

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

1 day

Special Instructions:

Trough levels are most reproducible.

Specimen

Specimen Type:

Blood

Container:

Green top (Li Heparin) or Red top tube

Draw Volume:

9 mL (Minimum: 2 mL) blood

Processed Volume:

3 mL (Minimum: 0.6 mL) serum/plasma

Note: Submission of the minimum volume results in an elevated reporting limit and inability to repeat analysis.

Collection:

Routine venipuncture

Special Processing:

Lab Staff: Centrifuge specimen, remove serum/plasma aliquot into a screw-capped round bottom plastic vial. Store and ship at refrigerated temperatures. Forward promptly.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimens

Interpretive

Reference Range:

Meperidine:

200 – 800 ng/mL

Normeperidine:

Results reported in ng/mL

Critical Values:

Meperidine:

>1500 ng/mL

Normeperidine:

>1000 ng/mL

Limitations:

Meperidine reporting limit:

<50 ng/mL

Normeperidine reporting limit:

<50 ng/mL

Methodology:

High Performance Liquid Chromatography with Ultraviolet Detection (HPLC-UV)

Gas Chromatography/Mass Spectrometry (GC/MS)

References:

MedTox Laboratories Web Site (July 2006) www.medtox.com

Updates:

5/6/2010: CPT updated, previously listed as 83925 x2.



  Lab Test Directory
    Chemistry
    Coagulation
    Flow/Immunology
    Hematology
    Microbiology/ Virology
    Other Fluids
    Pathology
    Serology
    Transfusion Services
    Urine/Stool

  Search Lab Test Directory
    List All Documents

  Lab Staff

  E-mail Lab Services