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HelpGentamicin Level*
Instrumentation
Roche Cobas
Performing Laboratory
Rutland Regional Medical Center Laboratory
Specimen Requirements
Specimen Type: Blood
Container/Tube:
Preferred: Light-green top (lithium heparin gel or green-yellow)
Specimen Fill Volume: Full tube
Specimen Minimum Volume: 2 mL
Collection Instructions:
1. Send specimen in original tube.
2. If there is a delay in transport of >1 hour, centrifuge tube.
Specimen Transport Temperature
Refrigerated
Day(s) Performed
Daily
Available STAT
Analytical Time:
1 day
Test Classification and CPT Coding
CPT: 80170
LOINC: 35668-3
Result Name: Gentamicin Level
Result Code: RMCL800493
Reference Values
Peak: 4-8 ug/ml
Trough 1-2 ug/ml
Critical Values:
Critical value (automatic call-back):
Peak >12.0 µg/mL
Random >12.0 µg/mL
Trough >2.0 µg/mL