Gentamicin, Trough

Tube Type = Royal Blue Top

Tube Type

Test ID LAB26
EPIC Order
 GENTAMICIN LEVEL, TROUGH
CPT Code(s) 80170
Group/Individual Test Individual
Laboratory Core Laboratory
Tube Station Routine: 30; STAT: 888
Specimen Routine: 2 mL blood/navy blue plain tube/red plain tube also acceptable; See Comments
Micro: 300 µL blood/red plain bullet; See Comments
Stability
Unspun: 2 hours
Spun/Separated, Room temperature: 8 hours
Spun/Separated, Refrigerator: 2 days
Spun/Separated, Frozen: 30 days
Availability 24 hrs/day
Turnaround Time Routine: 2 hrs; STAT: 1 hr
Reference Range Therapeutic: <2.0 mcg/mL(Trough)
Critical: >2.0 mcg/mL (Trough)
Comment

Collect sample immediately before administering dose.

Red plain tubes WITHOUT Serum Separator Gel

Refer to Gentamicin, Peak for information.

Reviewed by J. Carr on January 09, 2026

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