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HelpTest Code LAB36 Tobramycin, Post/Peak
Performing Laboratory
Asante Three Rivers Medical Center
Specimen Minimum Volume
0.5 mL
Billing Code
2051233
Methodology
Turbidimetric Inhibition
Specimen Requirements
RRMC:
Lithium Heparin Green top tube
Specimen should be collected at the completion of a 60-minute infusion
Pre and post labeling of samples is critical
Outpatient clients MUST draw SST
TRMC:
Plain Red top tube No SST or PST
Specimen should be collected at the completion of a 60-minute infusion
Pre and post labeling of samples is critical
Reasons for Rejection
Icterus
Lipemia
Hemolysis
Quantity not sufficient (QNS)
Lack of Two Patient Identifiers:
1-Patient's First & Last name
2-Patient's Date of Birth
Day(s) Test Set Up
Routine – same day
ASAP – 2 hours after receipt of specimen in lab
STAT – 1 hour after receipt of specimen in lab
Test Classification and CPT Coding
80200 - Tobramycin, Therapeutic Drug Assay
Additional Information
Tobramycin is an aminoglycoside antibiotic whose activity is similar to that of Gentamicin against gram negative bacteria. Tobramycin exhibits a narrow therapeutic range which makes its use hazardous, especially in patients with impaired renal functions.
Specimen Transport Temperature and Stability
RRMC:
Centrifuge collection tube within 2 hours of collection
Stable 8 hours at room temperature
Serum stable 48 hours if aliquoted and refrigerated at 2° to 8° C
TRCH:
Centrifuge collection tube and refrigerate within 2 hours of collection
Serum stable for 48 hours at 2° to 8° C
Performing Department
Chemistry