Coumadin

Overview

  • EPIC Code:
  • LAB2519
  • Soft Test Code:
  • WARFR
  • Send Out Test Code:
  • 5103
Alternate Names
  • Warfarin

Specimen Collection & Preparation

Specimen Requirements

3.0 mL Serum from a Red Top Tube in a Plastic Vial

Alternate Specimen

3.0 mL Plasma from a Lavender Top Tube - EDTA in a Plastic Vial
or
3.0 mL Plasma from a Green Top Tube - Li Heparin in a Plastic Vial
or
3.0 mL Plasma from a Green Top Tube - Na Heparin in a Plastic Vial
or 
3.0 mL Serum from a Navy Blue Top Tube - No Additive in a Plastic Vial
or
3.0 mL Plasma from a Blue Top Tube - 3.2% Na Citrate in a Plastic Vial

TransportAndStorage

1 week Refrigerated

Collection Instructions

Centrifuge and separate from cells immediately

Clinical Interpretation

Reference Range:

1.0 - 10.0 mcg/mL 

Detection Limit: 0.1 mcg/mL


Critical Ranges:

> 10.0 mcg/mL


Methodology:
  • High Performance Liquid Chromatography (HPLC)

Production Schedule

Sites Performed
  • Quest - Chantilly
Days Performed
Monday
Wednesday
Friday
Departments
  • Sendouts - Clinical
Turn Around Time

3 to 5 days


Coding & Compliance

CDM

01422848


CPT Coding

82491