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Digitoxin, Serum/Plasma
Test Code417X
CPT Codes
80299
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.4 mL
Other Acceptable Specimens
Plasma collected in an EDTA (lavender-top), sodium heparin (green-top), 3.2% sodium citrate (light blue-top), or ACD solution B (yellow-top) tube
Instructions
Promptly centrifuge and separate serum or plasma into a plastic screw capped vial using approved guidelines
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: Undetermined
Refrigerated: 7 days
Frozen: 90 days
Refrigerated: 7 days
Frozen: 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Polymer gel separation tube (SST or PST) • Unspun red-top tube
Methodology
Immunoassay
Setup Schedule
Set up: As needed; Report available: 5 days
Clinical Significance
Digitoxin is a cardiac glycoside derived from the digitalis plant. It is used to treat congestive heart failure and atrial dysrhythmias. Digitoxin levels are monitored to assure adequate therapeutic levels are achieved and to avoid toxicity.
