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Test Code GENT Ran Gentamicin, Random

Important Note

Collect trough samples just before next dose. When adjusting dosage measure peak and trough levels during the same dosing intervals.

Performing Laboratory

Women and Children's Hospital Laboratory 304-388-2385
Greenbrier Valley Laboratory 304-647-6060

Specimen Requirements

Preferred: Plasma-Dark Green Lithium Heparin or Serum- red top

Acceptable: Plasma-Mint Green or Serum-SST gold top

Allow SST or red top to completely clot      

Spin and physically separate plasma/serum from contact with cells as soon as possible

4 mL of plasma/serum (minimum 2 mL)

Specimen Rejection

  • Improperly labeled, collected, stored, and transported
  • Quantity not sufficient

Storage and Stability

Refrigerated 2-8oC 6 weeks
Frozen <-20oC 6 months

Reference Values

Trough 0 days-4 months 0.5-1.9 mg/L
Trough >4 months 0.5-1.5 mg/L
Peak All ages 4.0-10.0 mg/L

 

Critical Value: > 12.0 mg/L

Methodology

Homogeneous enzyme immunoassay Women and Children's
Two-Point Rate Greenbrier 

Days Test Set Up and Turnaround

Monday through Sunday, Continuously

AM Collection Expected by 9AM same day
Routine Expected within 24 hrs
Stat Expected within 1 hr
Timed Expected results are test dependant

CPT Coding

80170