Test Code GENT Tr Gentamicin, Trough

Important Note

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

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

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)

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

Trough	0 days-4 months	0.5-1.9 mg/L
Trough	>4 months	0.5-1.5 mg/L

Critical Value: > 2.0mg/L

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

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

80170