Digitoxin, Serum/Plasma

Crystodigin, Digitaline (Digitoxin), Lanatoxin, Digitoxin Quantitative, Serum or Plasma, Digitoxin Level

Test Codes

Order Reference Lab Miscellaneous Send Out: EPIC: LAB848, Beaker: Ref. Lab. Misc., Quest: 417

Department

Send Outs

Instructions

This test will not measure Digoxin (Lanoxin). For Digoxin testing, please order Digoxin Level.

Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube.
Also acceptable: One Lavender-top EDTA tube.

• Do not use Serum Separator Tubes.
• Time of Collection: 8-12 hours after the last dose.

Physician Office/Draw Specimen Preparation

Centrifuge to separate serum or plasma from cells within two hours of collection. Transfer serum or plasma to a plastic transport tube and refrigerate at (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 1.0 mL serum or plasma, refrigerated at (2-8°C or 36-46°F). (Minimum: 0.4 mL)

Rejection Criteria

• Serum Separator (SST) tubes.
• Unspun Red top tube.
• Specimens not collected and processed as indicated.

In-Lab Processing

Centrifuge to separate serum or plasma from cells within two hours of collection. Transfer serum or plasma to a plastic transport tube and refrigerate at (2-8°C or 36-46°F).

Transport: 1.0 mL serum or plasma, refrigerated at (2-8°C or 36-46°F). (Minimum: 0.4 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): Unacceptable
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 3 months

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Quest Diagnostics, Wood Dale, IL. Forwarded to National Medical Services (NMS), Willow Grove, PA.

Performed

Varies.
Results available in 5-10 days.

Reference Range

By report.

Test Methodology

Quantitative Immunoassay

CPT Codes

80299

Contacts

Last Updated

8/6/2026