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Epic Code LAB132 Alanine Aminotransferase (ALT), Blood Level

Test Name Alias

Alanine Aminotransferase Blood Level | ALT | GPT | SGPT | 8337

Interface Order Alias


Specimen Requirements

Specimen Collection: Blood


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

  • Avoid 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

Plasma or Serum Minimum Volume: 0.5 mL

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: 72 hours

Frozen: aliquot plasma/serum for longer storage

Laboratory Retention: 72 hours

Test Frequency

Available 24 hours, usual TAT 1 day.

Reference Range

Updated 8/3/2022

0 up to 1 Years: 7 to 36 U/L

1 Years up to 13 Years: 12 to 28 U/L

13 Years up to 19 Years: 10 to 25 U/L

19 Years up and older: 0 to 35 U/L

0 up to 1 Years: 7 to 36 U/L

1 Years up to 13 Years: 12 to 28 U/L

13 Years up to 19 Years: 12 to 27 U/L

19 Years up and older: 0 to 50 U/L

Performing Department


Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI
Corewell Health Big Rapids Laboratory, Big Rapids, MI
Corewell Health Blodgett Laboratory, Grand Rapids, MI
Corewell Health Gerber Laboratory, Fremont, MI
Corewell Health Kelsey Laboratory, Lakeview, MI
Corewell Health Ludington Laboratory, Ludington, MI
Corewell Health Pennock Laboratory, Hastings, MI
Corewell Health Reed City Laboratory, Reed City, MI
Corewell Health Greenville Laboratory, Greenville, MI
Corewell Health Zeeland Laboratory, Zeeland, MI


Enzymatic – IFCC with pyridoxal phosphate activation



CDM Code


Epic Test ID




Reviewed Date


Updated Date

3/14/2024 - Reference Range