Sign in →

Test Code GENTA Gentamicin, Trough, Serum

Useful For

Monitoring adequacy of drug clearance during gentamicin therapy

Reporting Name

Gentamicin, Trough, S

Specimen Type

Serum


Specimen Required


Collection Container/Tube: 

Preferred: Serum gel 

Acceptable: Red top 

Submission Container/Tube: Plastic vial 

Specimen Volume: 0.5 mL 

Collection Instructions:  

1. Serum gel tubes should be centrifuged within 2 hours of collection. 

2. Red-top tubes should be centrifuged, and the serum aliquoted into a plastic vial within 2 hours of collection.


Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 7 days
  Frozen  14 days
  Ambient  72 hours

Reject Due To

Gross hemolysis Reject

Reference Values

Therapeutic: <2.0 mcg/mL

Toxic: >2.0 mcg/mL

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 day

Specimen Retention Time

1 week

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

80170

LOINC Code Information

Test ID Test Order Name Order LOINC Value
GENTA Gentamicin, Trough, S 3665-7

 

Result ID Test Result Name Result LOINC Value
GENTA Gentamicin, Trough, S 3665-7

Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.