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Epic Code LAB3639 Tobramycin Trough Blood Level

Test Name Alias

Tobramycin Trough Blood Level | 7113

Interface Order Alias

55069

Collection Instructions

Specimen Collection: Blood

 

Container(s): 4.5 mL Mint Green Top (Lithium Heparin Gel) or 5.0 mL Gold Top (Serum Separator-SST Gel)

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

Preferred Volume to Collect: 4.5 mL

Minimum Volume to Collect: 1.0 mL

Neonate Volume to Collect: 0.5 mL

Capillary collect ok? Yes

Microtainer acceptable: Yes

 

Collection Instructions:

  • Inpatients: Please contact your local inpatient pharmacy for information regarding appropriate timing for blood drug level orders, if needed.
  • Indicate date and time of last dose.
  • Avoid gross hemolysis
  • 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: Plasma or Serum

Centrifuge/Spin: Yes

Aliquot: Yes

 

Processing Instructions:

  • Plasma 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 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

Trough: <1.0 mcg/mL

Critical:  ≥ 2.0 mcg/mL

 

Laboratory Critical Values Table

Performing Department

Chemistry

Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI

Methodology

Homogeneous Enzyme Immunoassay

CPT

80200

CDM Code

3018020001

Epic Test ID

1230100748

LOINC

Tobramycin Lvl: 35670-9

Mayo Access Code

SHO55069

Reviewed Date

3/7/2024