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Gentamicin – Trough, Serum

Test ID: GENTAT S
Test
Specimen
Performance / Interpretation
Interface / Setup

Test

Aliases/Synonyms

Aminoglycoside

Method

Enzyme Immunoassay

Platform

Roche cobas P6000

Report Includes

Gentamicin - Trough

Specimens

Serum

Test Version

10-Dec-2019

Specimen

Specimens

Serum

Sample Volume

1 mL

Collection & Handling

Collection Instructions

Avoid gel-separator tubes.
Collect immediately before next dose. Wait until the third dose before collecting samples for therapeutic monitoring.

Handling Information

Store and send frozen.

Test Version

10-Dec-2019

Performance / Interpretation

Method

Enzyme Immunoassay

Platform

Roche cobas P6000

Turnaround Time

1 Day

Results

Name Units Reference Range Conversion Factor
Gentamicin - Trough mg/L
  • For traditional (conventional) dosing method:
     Pre-dose: <2.0 mg/L for adults and pediatrics
     Half-hour post-dose: 4.0 - 10.0 mg/L for adults ; 5.0 - 10.0 mg/L for pediatrics
    When used for synergy in the treatment of gram positive endocarditis in adults:
     Pre-dose: <1.0 mg/L
     Half-hour post-dose: 3.0 - 4.0 mg/L

    For extended interval (once daily) dosing method:
     Pre-dose <1.0 mg/L for adults
     8 - 12 hours post-dose for adults and use nomogram for interpretation;
     3 and 6 hours post-dose for pediatrics and use nomogram for interpretation.
Refer to guidelines for Aminoglycoside dosing at your institution.

Test Version

10-Dec-2019

Interface / Setup

HL7 Interface Codes

Order Code Result Codes Units
GENTAT S 63120Gentamicin, Before dose mg/L

Test Version

10-Dec-2019