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Test Name:
Digitoxin, Serum or Plasma
- SBMF No:
44539 - Performance Lab Name:
ARUP Laboratories - Test Mnemonic:
DIGT - ABN:
Not required - CPT Code:
80299 - LOINC Code:
3559-2 - Ref Lab Test No:
0090085 - Also Known As:
Crystodigin®
Digitaline
Lanatoxin® - Also See:
31042 Digoxin, Serum or Plasma - Spec Type:
Serum or plasma - Spec Container:
Red top (serum), Lavender top (EDTA), or Green top (heparin) tube - Alt Spec Container:
Also acceptable (avoid if possible): Gold top (SST) or light green top (PST) tube (follow instructions below) - Pref Vol:
1.0 mL - Min Vol:
0.4 mL - Fasting:
No - Spec Collect:
Avoid use of gel-barrier tubes for specimen collection
Routine venipuncture - Spec Process:
Serum sample tubes, clot 30 minutes
Promptly centrifuge 15 minutes
Immediately transfer serum or plasma to separate plastic tube - Spec Store Transport:
Refrigerated - Spec Stability:
After separation from cells:
5 days room temperature (20-30°C)
5 days refrigerated (2-8°C)
2 months frozen (-20°C) – Do not use frost-free units that undergo repeated freeze/thaw cycles - Spec Reject:
Citrated plasma
Tubes that contain liquid anticoagulant - Spec Remarks:
Separate serum or plasma from cells within 2 hours of collection
SST or PST:
Serum or plasma in a gel separator tube stored at room temperature is acceptable if separated from the gel within 6 hours
Serum or plasma in a gel separator tube stored refrigerated is acceptable if separated from the gel within 2 hours - Methodology:
Quantitative Immunoassay - Use:
Therapeutic Drug Monitoring - Clinical Significance:
Refer to:
- Reference Range:
Therapeutic Range:
10.0-32.0 ng/mL
Toxic: > 35.0 ng/mLNote:
This test will not measure digoxin (Lanoxin, Digitek); for digoxin testing, order Digoxin (31042). - Day Run:
Mon, Wed, Fri - Time Reported:
2-5 days - Test Type:
TOX-TDM
