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HelpTest Code TOBTA Tobramycin, Trough, Serum
Reporting Name
Tobramycin, Trough, SUseful For
Monitoring adequate clearance of tobramycin near the end of a dosing cycle
Method Name
Immunoassay
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions:
1. Draw blood no more than 30 minutes before next scheduled dose.
2. Serum gel tubes should be centrifuged within 2 hours of collection.
3. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.
Reject Due To
| Gross hemolysis | Reject |
Specimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 7 days |
| Frozen | 28 days | |
| Ambient | 72 hours |
Reference Values
Therapeutic: <2.0 mcg/mL
Toxic: >2.0 mcg/mL
Day(s) Performed
Monday through Sunday
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
80200
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| TOBTA | Tobramycin, Trough, S | 4059-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| TOBTA | Tobramycin, Trough, S | 4059-2 |
Report Available
Same day/1 to 2 daysForms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.