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Specimen Collection Manual and Test Catalog

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GENTAMICIN RANDOM

Geisinger Epic Procedure Code:  LAB2348    Geisinger Epic ID:  29552

SPECIMEN COLLECTION
Specimen type: 

Plasma or serum


Preferred collection container: 
Specimen required: 

2 mL aliquot serum or plasma; minimum 0.2 mL


Special notes: 

The date and time of the last drug dose should be written on request at the time of order. Typically peak level specimens are collected shortly after the dose is given and trough level specimens are collected shortly before the dose is given. Refer to your prescribing pharmacy for specific information on how drug doses are to be administered along with timing of specimen collection.



SPECIMEN PROCESSING
Processing instructions: 

Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection.


Transport temperature: 

Refrigerated (preferred) or frozen.


Specimen stability: 

Refrigerated: 1 week. Frozen: 2 weeks.


Rejection criteria: 

Stability limits exceeded.



TEST DETAILS
Reference interval: 

Reference Interval: 0.5-10 ug/mL.


Critical values/courtesy alerts: 
> 12 ug/mL.
CPT code(s):  80170
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Test includes: 

Random gentamicin, gentamicin last dose time, gentamicin last dose date.


Methodology: 
Immunoassay
Synonyms: 

RGENT


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.


Doctoral Director(s): 
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Review Date:  12/27/2024

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