Meperidine and Metabolite, Serum or Plasma

Test Code

CPT Codes

(Pethidine, Demerol)

Preferred Specimen
3 mL serum collected in a red-top tube (no gel)

Minimum Volume
1.2 mL

Other Acceptable Specimens
Plasma collected in an EDTA (lavender-top) tube

Test is for clinical use only.

Transport Container
Plastic screw-cap vial

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 14 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Serum separator tube (SST®)

Gas Chromatography

Setup Schedule
Set up: Daily a.m.; Report available: 4 days

Reference Range
See Laboratory Report

Clinical Significance
Test is for Therapeutic Drug Monitoring (scope: Meperidine and Normeperidine) and is for clinical use only.

Performing Laboratory
NMS Labs
200 Welsh Rd
Horsham, PA 19044

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.