ARUP's Laboratory Test Directory

Digitoxin : 0090085

Mnemonic: DIGT

Ordering Recommendation: This test will not measure digoxin (Lanoxin, Digitek); for digoxin testing, order Digoxin (0090080).
Methodology: Quantitative CEDIA Immunoassay
Performed: Mon, Wed, Fri
Reported: 1-4 days
Specimen Required: Patient Prep: Timing of specimen collection: At steady state concentration, 8-12 hrs. after last dose.

Collect: Plain red. Also acceptable: Lavender (K2 or K3EDTA) or pink (K2EDTA).

Specimen Preparation: Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).

Stability (collection to initiation of testing): After separation from cells: Ambient: 5 days; Refrigerated: 5 days; Frozen: 2 months

Reference Interval:
Therapeutic Range:
10.0-32.0 ng/mL
Toxic: > 35.0 ng/mL
Interpretive Data: Toxic concentrations may cause nausea, vomiting and cardiac abnormalities.
Note: This test will not measure digoxin (Lanoxin, Digitek); for digoxin testing, order Digoxin (0090080).
CPT Code(s): 80299
Cross References: Crystodigin® (Digitoxin) , Digitaline (Digitoxin), Lanatoxin® (Digitoxin)