Gentamicin, Trough Level
Ordering Recommendation
Optimize drug therapy and monitor patient adherence.
New York DOH Approval Status
Specimen Required
Draw specimen 30 minutes before next infusion.
Plain red.
Allow specimen to clot completely. Separate serum or plasma from cells. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL) Also acceptable: Heparinized plasma.
Refrigerated. If transport is prolonged: Frozen.
Separator tubes. Plasma collected in citrate or oxalate/fluoride tubes. Hemolyzed specimens.
After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 weeks (avoid repeated freeze/thaw cycles)
Methodology
Immunoassay
Performed
Sun-Sat
Reported
Within 24 hours
Reference Interval
Optimal: 0.5-2.0 µg/mL
Toxic: > 2.0 µg/mL
Interpretive Data
FDA
Note
Hotline History
CPT Codes
80170
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
0090310 | Gentamicin Trough | 3665-7 |
Aliases
- Garamycin
- Garamycin Trough Level
- Gentamicin Antibiotic Assay
- Gentamicin Trough Leve