Metformin, Serum/Plasma [11026X]

Test Code
11888

CPT Codes
83789

Preferred Specimen
1 mL plasma collected in an EDTA (lavender-top) tube, or 1 mL serum submitted in a red-top tube (no gel)

Minimum Volume

0.3 mL



Other Acceptable Specimens
1 mL plasma collected in an EDTA (pink-top) tube

Instructions
Promptly centrifuge and separate serum or plasma into a plastic, preservative-free, screw-capped vial, using approved guidelines.

Transport Container
Plastic screw-cap vial

Transport Temperature

Room temperature



Specimen Stability
Room temperature: 30 days
Refrigerated: 30 days
Frozen: 24 months



Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Polymer gel separation tube (SST® or PST)

Methodology
High Performance Liquid Chromatography/Tandem Mass Spectrometry (HPLC-MS/MS)

Setup Schedule
Set up: Wed a.m.; Report available: 5 days

Reference Range
See Laboratory Report

Clinical Significance
Test is for therapeutic drug monitoring.

Performing Laboratory

National Medical Services
3701 Welsh Rd
Willow Grove, PA 19090





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.