Test Overview
Test Methodology
Fluorescence Polarization Immunoassay (FPIA)
Test Usage
Monitor therapeutic drug level
Reference Range *
Therapeutic: Peak: 5-10 mcg/mL; Trough: 0.0 - 2.0 mcg/mL.
Test Details
Days Set Up
Daily, 24 hours
Analytic Time
2 hours
Soft Order Code
GENPK
MiChart Code
Gentamicin Level, Peak
Laboratory
Chemical Pathology
Section
Automation
STAT Availability
STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).
Specimen Requirements
Collection Instructions
Collect blood in a SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. For maximum clinical significance, usual sampling times are Peak: 0.5 to 1 hour after the end of a 30 minute I.V. infusion (one hour following I.M. administration) or Trough: immediately before next dose is given. Indicate whether specimen is Peak, Trough, or Random level.
Alternate Specimen
Red top or Green top tube (heparin).
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum
Billing
CPT Code
80170
Fee Code
23312
LOINC
Trough 22747-0; Peak 22746-2; Random 15106-8
NY State Approved
No