Warfarin, Serum/Plasma

Test Code

936

CPT Codes
80299

Preferred Specimen

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

Minimum Volume

0.2 mL

Other Acceptable Specimens

1 mL plasma collected in EDTA (lavender-top or pink-top) tube

Instructions

Promptly centrifuge and separate serum or plasma into a plastic screw-cap vial.

Transport Container

Plastic screw-cap vial

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 30 days
Refrigerated: 30 days
Frozen: 15 months

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Polymer gel separation tube • Serum separator tube

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

FDA Status
This test was developed and its performance characteristics determined by NMS Labs. It has not been cleared or approved by the US Food and Drug Administration.

Setup Schedule

Set up: Varies; Report Available: 7 days

Report Available

7 Days

Reference Range

See Laboratory Report

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.