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HelpTest Code 532 Gentamicin, Trough
Additional Codes
ALAB: GENTT
PowerChart: Gentamicin Trough Level
MA Cerner: Gentamicin, Trough - Wel
Test Method
Turbidimetric Inhibition Immunoassay; Beckman DxC700AU
Specimen Requirement
0.5 mL of serum or plasma is required for testing.
Additional Specimen Collection Information
Collect blood in a lithium heparin green-top or red-top tube. Serum and plasma gel tubes are not acceptable. Lipemic samples > 4+ turbidity must be cleared prior to analysis. It is recommended that the serum or plasma be separated from contact with cells within 2 hours from time of collection. Serum or plasma should be stored refrigerated if assays are not completed within 8 hours. If assays are not completed within 48 hours, freeze the sample.
Performance
Testing is performed Monday through Sunday.
Routine: Typically completed within 4 hours after the specimen arrives at the testing site.
Expedite: Typically completed within 2 hours after the specimen arrives at the testing site.
STAT: Typically completed within 1 hour after the specimen arrives at the testing site.
Reference Values
<2 mcg/mL
- Toxic Level: >2 mcg/mL
- The effective therapeutic concentration for pediatric patients may be higher than adults.
CPT Code Information
80170 Therapeutic Drug Levels; Gentamicin
Useful For
Monitoring adequacy of serum concentration during gentamicin therapy
LOINC Code Information
3665-7 Gentamicin [Mass/Volume] In Serum Or Plasma-Trough