Innovation Through Pioneering Technology SM

Call us today 800-522-5052

For billing information:

Test Compendium


Test Code

  • 8667

Test Synonym

  • Gentamicin, Peak & Trough; Garamycin (R); Gentak®


  • 1 mL (each tube)

Minimum Volume

  • 0.3 mL (each tube)

Specimen Requirements

  • Serum Or Plasma


  • Plain Red Top Tube, Green Top Tube, Transfer Tube- Serum, Transfer Tube- Plasma


  • Ambient

CPT Codes

  • 80170
    *The CPT codes provided are based on AMA guidelines and are provided for informational purposes only. CPT coding is the responsibility of the billing entity. Please direct any questions regarding the CPT coding to the payer being billed.

Special Instructions

  • 1 mL serum from a red top or heparin plasma in each tube. Please label tubes appropriately as "peak" and "trough". SST serum not acceptable.

Additional Information

  • Transfer separated serum or plasma to a plastic transport tube. Both peak and trough concentrations should be monitored. The trough sample is drawn immediately prior to the next dose. Peak samples should be drawn 45 to 60 minutes after an I.M injection, 30 minutes after the end of a 30-minute I.V. infusion or immediately after a 60-minute I.V. infusion.

Specimen Stability

  • AMBIENT: 14 days REFRIGERATED: 14 days FROZEN: 14 days