Gentamicin Lvl, Peak (GPK)

Department: Chemistry
Test Synonym(s): LAB28, GPK, GML, Garamycin
CPT Codes: 80170
Methodology: PETINIA
Reference Range: 0 - 1 yr: 5 - 10 mcg/mL. For 2-4 mg/Kg dose, infant peak range is 5-10 mcg/mL; For 5-7 mg/Kg dose, infant peak range is >= 15 mcg/mL. 1 - 150 yrs: 5 - 10 mcg/mL
Tube Type: Dark green top (Sodium Heparin)
Specimen: Blood
Alternate Specimen: Red top (no gel)
Pediatric Requirements: 1 dark green top microtainer
Volume: 2 mL Blood
Minimum Volume: 0.25 mL
Temperature: Refrigerated if not delivered to the lab immediately
Stability: Refrigerated: 2 days, Frozen at -20 C for longer storage
Reasons for Rejection: Gross hemolysis
Days Performed: Daily
Times Performed: Continuous
TAT: STAT: 1 hour; Routine: 2 hours
Significance: Peak serum levels generally - draw 20 minutes after 30 min IV - Submit date/time IV start, date/time IV stop, peak collection date/time, dosage amount/interval.

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