Home
HelpTest Code LAB38 Tobramycin Level, Trough (Pre Drug Level)
Synonym
- TOBTR
Specimen Required
Preferred Container/Tube: Mint Green Top
Acceptable Container/Tube: Mint Green Top, Red Top
Specimen Volume: 3 mL
Specimen Minimum Volume: 1 mL
Specimen Stability Information
Ambient: 4 hours
Refrigerated: 5 days
Specimen Collection Information
Processing instructions: Draw 30 min - 1 hour PRIOR to dose.
Rejected Due To
- Gross hemolysis
- Gross icterus
- Quantity not sufficient
- Quality not acceptable
Reference Values
Therapeutic Range: <1.0 mcg/mL
Method Description
This assay is based on competition for antibody binding sites between drug in the sample and drug labeled with the enzyme glucose-6-phosphate dehydrogenase (G6PDH). Enzyme activity decreases upon binding to the antibody, so the drug concentration in the sample can be measured in terms of enzyme activity. Active enzyme converts oxidized nicotinamide adenine dinucleotide (NAD) to NADH, resulting in an absorbance change that is measured spectrophotometrically.
Performing Lab
Clinical Lab UH
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 day
Reporting Name
Tobramycin Level, Trough (Pre Drug Level)
CPT Code Information
80200
LOINC Code Information
4059-2