Tube Type

Test ID   LAB23
EPIC Order
CPT Code(s)   80162
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   STAT: 888; Routine: 30
7 mL blood/royal blue top tube Only; see Comments for important information
300 µL blood/red top (no gel) pediatric bullet
Stability Unspun:
Unspun: 4 hours
Room temperature: 8 hours
Refrigerator: 1 week
Frozen: 4 months
Availability Routine: 24 hrs/day
  STAT: Yes
Turnaround Time   STAT: 1 hour; Routine: 2 hours
Reference Range Therapeutic: 0.8-1.8 ng/mL (collected 6 hr after dose)
  Critical: >2.0 ng/mL


Red Top Pediatric Tubes must NOT contain Serum Separator Gel.
Collection information: Digoxin samples should be drawn 6 - 8 hours after dose.
This test should not be ordered on patients receiving Digibind.
Patients receiving Digibind should be monitored using Free Digoxin levels.
Call Core Laboratory for more information.

Reviewed by Christopher Parker on December 16, 2019

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514