Quetiapine, Serum/Plasma [35299]

Test Code
QUETPN

Alias/See Also
35299

CPT Codes
80339 (HCPCS: G0480)

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

Patient Preparation
Collect as trough prior to next dose.

Minimum Volume
0.4 mL

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

Instructions
Collect serum and remove from cells.

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 21 days
Refrigerated: 21 days
Frozen: 21 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gel barrier tubes • Serum separator tubes (SST®)

Methodology
Chromatography/Mass Spectrometry

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Tues, Thurs, Sat p.m.; Report available: Next day

Reference Range
100-1000 ng/mL

Clinical Significance
Therapeutic drug monitoring.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153



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.