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GENTAMICIN, PEAK AND TROUGH

Test Code

444X

Includes

GENTAMICIN, PEAK; GENTAMICIN, TROUGH

Preferred Specimen(s)

(11551) GENTAMICIN, PEAK
SR
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.

1 ML SERUM COLLECTED IN A RED-TOP TUBE (NO GEL)
(11552) GENTAMICIN, TROUGH
SR
PATIENT PREPARATION: COLLECT AS A TROUGH JUST PRIOR TO
NEXT DOSE

1 ML SERUM COLLECTED IN A RED-TOP TUBE (NO GEL)

Minimum Volume

(11551) GENTAMICIN, PEAK
0.5 ML
(11552) GENTAMICIN, TROUGH
0.5 ML

Alternative Specimen(s)

(11551) GENTAMICIN, PEAK
LAVENDER TOP
GREEN TOP
(11552) GENTAMICIN, TROUGH
LAVENDER TOP
GREEN TOP

Transport Container

(11551) GENTAMICIN, PEAK
RED TOP
(11552) GENTAMICIN, TROUGH
RED TOP

Transport Temperature

(11551) GENTAMICIN, PEAK
ROOM TEMPERATURE
(11552) GENTAMICIN, TROUGH
ROOM TEMPERATURE

Specimen Stability

(11551) GENTAMICIN, PEAK
ROOM TEMPERATURE: 5 DAYS
REFRIGERATED: 7 DAYS
(11552) GENTAMICIN, TROUGH
ROOM TEMPERATURE: 5 DAYS
REFRIGERATED: 7 DAYS

Methodology

Immunoassay (IA)

Performing Laboratory

Quest Diagnostics
3714 Northgate Blvd
Sacramento, CA 95834

Setup Time

(11552) GENTAMICIN, TROUGH
1ST SHIFT

Setup Days

(11551) GENTAMICIN, PEAK
MON - FRI
(11552) GENTAMICIN, TROUGH
MON - FRI

Report Available

(11551) GENTAMICIN, PEAK
24 HOURS
(11552) GENTAMICIN, TROUGH
24 HOURS

Reference Range(s)

Gentamicin, Peak 5.0-10.0 mg/L
Gentamicin, Trough 1.0-2.0 mg/L

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 and serial monitoring of peak and trough serum levels may provide the clinician with information to maintain safe and therapeutic levels.

LOINC®' Code(s)

The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.

NOTE: The codes listed in the table below are not orderable Test Codes.

Result
Code
Result NameLOINC CodeComponent Name
782GENTAMICIN, PEAK3663-2Gentamicin^peak
783GENTAMICIN, TROUGH3665-7Gentamicin^trough

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided 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 payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.