Meperidine and Normeperidine


Sunquest Code:MEPER  
Epic Code:LAB3607Epic Name:Meperidine and Normeperidine
Synonyms:Demerol
Methodology:Liquid Chromatography/Tandem Mass Spectrometry
CPT Code:80362 x2
Test Includes:Meperidine and normeperidine.
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 5 days.


Collection Instructions

Specimen:Blood
Optimal Volume:6 mL
Minimum\Peds Volume:2.6 mL
Container:Red (no gel) (Green (lithium heparin, no gel), Green (sodium heparin, no gel))
Collection Instructions:Usual sampling time is immediately prior to next dose (trough).


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 3 mL, 1.2 mL minimum. Store at room temperature up to 3 days. Alternatively refrigerate or freeze.
Shipping Instructions:Ship at room temperature.
Test Performed at or Referral Lab Lab Sendouts  (MedTox)
Referral Lab number:67


Interpretive

Critical Range:Meperidine: 1500 ng/mL or greater; Normeperidine: 1000 ng/mL or greater
Reference Range:Meperidine: 400-700 ng/mL; Normeperidine: not established
Use:Therapeutic monitoring and assess toxicity.


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