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General Information:

Web Links:

Mayo Clinic Laboratories

Test Code LAB0214724 Gentamicin (Garamycin) Random, Plasma

Methodology

Particle-Enhanced Turbidimetric Immunoassay

Performing Laboratory

CentraCare Laboratory Services

Specimen Requirements

Both peak and trough levels are generally obtained.

 

Specimen Type: Plasma

Container/Tube:

Preferred:Green top (Lithium heparin/ PST )

Acceptable: Serum (Red top, Gold SST), Na Heparin Plasma (label specimen appropriately)

Specimen Volume: 0.5 mL

Minimum Specimen Volume: 0.25 ml

Collection Instructions: Plasma for a peak level should be drawn 30 to 60 minutes after completion of infusion. Plasma for a trough level should be drawn just before next dose.

Additional Information: Date and time of draw are required.

Specimen Transport Temperature

Refrigerated

Reference Values

PEAK
Therapeutic concentration: 3.0-9.9 mcg/mL
Toxic concentration (automatic call-back): ≥12 mcg/mL
TROUGH
Therapeutic concentration: <2 mcg/mL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

80170