Test Directory

Test Code
DIGF
Test Name
Digoxin, Free
CPT Codes
80163
Expected Turnaround Time
2 - 5 days
Clinical Utility

Therapeutic drug management; management of digoxin overdose post Digibind®.

Specimen and Container Info

Specimen Type: Serum

Alternate Specimen Type: Plasma

Collection Container: Red Top, Plain

Alternate Collection Container: Green Top (Sodium or Lithium Heparin)

Desired Specimen Volume: 3 mL

Collection Instructions
  1. Collect a red top, plain tube via venipuncture.
Processing and Submission Instructions
  1. Separate serum from cells within two hours of collection.
  2. Transfer 3 mL of serum to a clear aliquot tube (screw cap).
Transport Instructions

Transport to the laboratory refrigerated. 

Stability Requirements

Room Temperature

3 days

Refrigerated

14 days

Frozen

6 months

Causes for Rejection
  • Gel-barrier tubes
Methodology
Ultrafiltration; immunoassay (IA)
Reference Intervals

See patient report.

Alternate Names
  • Digitek®
  • Digox®
  • Lanoxin®
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Varies