Tobramycin, Trough Level
Ordering Recommendation
Optimize drug therapy and monitor patient adherence.
New York DOH Approval Status
Specimen Required
Draw 5-90 minutes before next infusion.
Plain red. Also acceptable: Green (sodium or lithium heparin).
Separate serum or plasma from cells. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Refrigerated. If transport is prolonged: Frozen.
Citrate, oxalate/fluoride, or separator tubes. Hemolyzed specimens.
After separation from cells: Ambient: 4 hours; Refrigerated: 1 week; Frozen: 2 weeks
Methodology
Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
Reference Interval
Optimal: 0.5-2.0 µg/mL
Toxic: 2.1 µg/mL or greater
Interpretive Data
FDA
Note
Hotline History
CPT Codes
80200
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0090320 | Tobramycin Trough | 35670-9 |
Aliases
- Nebcin