Gentamicin, Peak (Client 53380)

Test Code

32509

CPT Codes
Restricted Client Code - All other clients should order test code 8582

Preferred Specimen

1 mL serum collected in a red-top tube (no gel)

Patient Preparation
Collect peak at end of 60 minute IV infusion, 30 minutes after end of 30 minutes IV infusion or 60 minutes after IM dose

Minimum Volume

0.2 mL

Other Acceptable Specimens

1 mL plasma collected in EDTA (lavender-top) tube, or sodium heparin (green-top) tube, or lithium heparin (green-top) tube

Instructions

Collect peak at end of 60-minute IV infusion, 30 minutes after end of 30 minutes IV infusion or 60 minutes after IM dose.

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 5 days
Refrigerated: 7 days
Frozen: Unacceptable

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Serum separator tube

Methodology
Immunoassay

Setup Schedule

Set up: Tues-Sat; Report available: 3 days

Clinical Significance

Gentamicin is an aminoglycoside antibiotic used in the treatment of gram-positive and gram-negative bacterial infections, especially Pseudomonas, Proteus, Klebsiella and Staphylococcus. Gentamicin is potentially nephrotoxic and ototoxic. Serial monitoring of peak and trough serum levels may provide the clinician with information to maintain safe and therapeutic levels.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.