Test Code LAB36 Tobramycin, Peak, Plasma
Methodology
Enzyme Immunoassay
Literature References:
Package insert: Tobramycin TOBR2. Roche Diagnostics, 02/2015.
Performing Laboratory
Barnes-Jewish Hospital Laboratory
Specimen Requirements
Specimen Type: Plasma
Container/Tube: Mint-green top (lithium heparin)
Specimen Volume: Full tube
Collection Instructions: Draw blood 60 to 90 minutes after completion of drug infusion for intravenous dose.
Additional Information: Date and time of draw are required.
Specimen Transport Temperature
Ambient
Reference Values
Setting |
Target Range |
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Unspecified indication |
UTI |
Systemic illness |
Sepsis |
Critical |
|
Adults 18 yo and older |
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Tobramycin Trough |
0-2 mcg/mL |
0-1 mcg/mL |
0-1 mcg/mL |
0-2 mcg/mL |
≥2.1 mcg/mL |
Tobramycin Rnd |
NA |
NA |
NA |
NA |
≥45 mcg/mL |
Tobramycin Peak |
3-10 mcg/mL |
3-5 mcg/mL |
6-8 mcg/mL |
8-10 mcg/mL |
NA |
Pediatric <18 yo |
|
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Tobramycin Trough |
<1 mcg/mL |
<1 mcg/mL |
<1 mcg/mL |
<1 mcg/mL |
≥2.1 mcg/mL |
Tobramycin Rnd |
NA |
NA |
NA |
NA |
≥45 mcg/mL |
Tobramycin Peak |
8-12 mcg/mL |
8-12 mcg/mL |
8-12 mcg/mL |
8-12 mcg/mL |
NA |
Day(s) Test Set Up
Monday through Sunday
Turnaround Time
STAT: 1 hour after receipt in laboratory
Routine: 2-4 hours after receipt in laboratory
Test Classification and CPT Coding
80200-Tobramycin
Additional Information
For BJH Laboratory Use Only
Alternate Tube(s):
1 dark green-top (lithium or sodium heparin) tube
1 red-top tube
1 lavender-top (EDTA) tube
Separator gel tube is acceptable.
Analyte Stability:
- Specimens must be processed within 8 hours.
- Processed sample stability:
- Ambient - 8 hours
- Refrigerated (2 - 8°C) - 3 days
- Frozen (≤ -20°C) - 1 month
- See Analyte Stability Chart under General Information for a complete list.
Laboratory Processing Instructions:
Test performed in BJH Core Lab. Processed by automated line for delivery to the Cobas 8000. Completed specimens are stored refrigerated for 5 days.
LOINC Code Information
Name | LOINC Code |
Tobramycin, Peak, Plasma | 4057-6 |