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Epic Code LAB3633 Gentamicin, Random

Test Name Alias

Gentamicin Random Blood Level | GENT LVL | GENR | SHO55068 | 1230100715

Interface Order Alias

55068

Ordering Instructions

Inpatients: Please contact your local inpatient pharmacy for information regarding appropriate timing for blood drug level orders, if needed.

 

Collection Instructions

Specimen Collection: Blood

 

Container(s): Gold Top (Serum Separator-SST Gel) or Light Green Top (Lithium Heparin Gel)

Acceptable containers: 6.0 mL Red Top (Plain) or 4.0 mL Green Top (Lithium Heparin, non-gel)

Minimum Volume to Collect: 1.0 mL

Neonate Volume to Collect: 0.5 mL

Capillary collect ok? Yes

Microtainer acceptable: Yes

 

Collection Instructions:

  • Indicate date and time of last dose.
  • After collection, gently invert tube 8-10 times.
  • Specimen should be processed within 2 hours See Processing Instructions.

 

Processing Instructions (Laboratory, Outpatient or Off-site collection)

Processed Specimen: Serum or Plasma

Centrifuge/Spin: Yes

Aliquot: Yes

 

Processing Instructions:

  • Serum is preferred specimen type
  • Green Tube/Plasma: Centrifuge after collection.
  • Gold Tube/Serum: Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours.

Transport Temperature: Refrigerate

Specimen Transport Temperature

Refrigerate

Specimen Stability

Ambient: 8 hours

Refrigerate: 24 hours (48 hours if aliquoted serum/plasma)

Frozen: aliquot plasma/serum for longer storage

Laboratory Retention: 72 hours

Test Frequency

Available 24 hours, usual TAT 1 day.

Reference Range

  CHW CHS
Peak 5.0 - 50.0 mcg/mL 5.0 - 10.0 ug/mL
Trough <1.0 mcg/mL <2.0 ug/mL
Random 1.0 to 50.0 mcg/mL 2.0 - 8.0 ug/mL

 

Laboratory Critical Values Table (link)

 

Performing Department

Chemistry

Performing Department Laboratory Location

CHW

Corewell Health Reference Laboratory, Grand Rapids, MI

Corewell Health Ludington Laboratory, Ludington, MI
Corewell Health Pennock Laboratory, Hastings, MI

 

CHS
Corewell Health Lakeland St. Joseph Laboratory, St. Joseph, MI

Methodology

CHW: Enzyme Immunoassay

CHS: Turbidimetric Immunoassay

CPT

80170

CDM Code

3018017001

Epic Test ID

1230100715

LOINC

Gentamicin Lvl:  47109-4

Mayo Access Code

SHO55068

Reviewed Date

3/7/2024

Updated Date

3/14/2024 - Reference Range

12/2/2025 - Gold Top Preferred specimen

Orderable Regions

Southwest; West