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Test Code 9247 Meperidine (Demerol) and Normeperidine, serum

Additional Codes

Mayo Test ID

Reporting Name

Meperidine (Demerol)

Performing Laboratory

Medtox Laboratories, Inc.

Specimen Type


Specimen Required

Submit only 1 of the following specimens:



Draw blood in a green-top (sodium heparin) tube(s). Plasma gel tube is not acceptable. Spin down and send 3 mL of sodium heparin plasma refrigerated in a plastic vial.



Draw blood in a plain red-top tube(s). Serum gel tube is not acceptable. Spin down and send 3 mL of serum refrigerated in a plastic vial.

Specimen Minimum Volume

0.6 mL

Specimen Stability Information

Specimen Type Temperature Time
Varies Refrigerated (preferred) 14 days
  Frozen  180 days
  Ambient  72 hours

Reference Values


Reference Range: 400 - 700 ng/ml


Normeperidine: No reference range provided


Day(s) and Time(s) Performed

Monday through Sunday

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FMEP Meperidine (Demerol) 68314-4


Result ID Test Result Name Result LOINC Value
Z1132 Meperidine 73934-2
Z1159 Normeperidine 73933-4

Method Name

Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

Barnes-Jewish Hospital Additional Information:
For BJH Laboratory Use Only

Laboratory Processing Instructions:
BJH Chemistry will forward to Mayo Medical Laboratories who will forward to the performing laboratory. Do not reject specimen if not received on ice.