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Labcorp Oklahoma, Inc.
Test Directory


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Tobramycin Trough

Order Name TOBRA TROU
Test Number: 4005650
Revision Date 09/20/2017
Test Name Methodology LOINC Code
Tobramycin Trough
Enzyme Immunoassay 4059-2 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Plasma Lithium Heparin PST (Light Green Top) Refrigerated
Alternate 1 1 mL (0.5) Serum Clot Activator SST Refrigerated
Instructions Trough: draw immediately before next dose.
Stability: Ambient=8 hours; Refrigerated= 7 days
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-2 days  
Clinical Use Useful for optimizing drug dosage and assessing toxicity. 
CPT Code(s) 80200
Lab Section Chemistry