Digoxin

Test Code
DIG


Preferred Specimen
1 mL serum


Patient Preparation
Collect as a trough just prior to next dose

Minimum Volume
0.5 mL


Other Acceptable Specimens
Heparinized plasma


Instructions
Collect specimen 6-8 hours post dose.  Include date and time of last dose on order request.


Transport Container
Transport tube


Transport Temperature
Refrigerated (cool packs)


Specimen Stability
 Refrigerated: 24 hours


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


Anticoagulants other than heparin




Methodology
Immunoassay (IA)

Setup Schedule
24/7


Report Available
Same day


Limitations
Spironolactone and some herbal drugs may interfere with this test.


Reference Range
0.8-2.2 ng/mL


Clinical Significance
Digoxin is a cardiac glycoside derived from the digitalis plant. It is used to treat congestive heart failure and atrial dysrhythmias. Digoxin levels are monitored to assure adequate therapeutic levels are achieved and to avoid toxicity.





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.