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Test Code 138 Alanine Aminotransferase (ALT) (GPT), Serum

Additional Codes


PowerChart: ALT/SGPT

Epic: [LAB132] ALT

MA Cerner: ALT.

Test Method

UCL: Kinetic Rate Method; Beckman DXC600/DXC880i

MA: Bichromatic (340, 700 nm) Rate Technique; Siemens

Specimen Requirement

0.5 mL plasma or serum is required.

Additional Specimen Collection Information

Collect blood in a lithium heparin, green-top or red-top tube. PST and SST (gel tubes) are acceptable. Serum or plasma should be separated from contact with the cells within 2 hours of collection. Specimens not centrifuged within 4 hours of collection may be rejected. Refrigerate the specimen if unable to assay within 8 hours of collection. Hemolyzed specimens are not acceptable. Samples with ≥3+ lipemia must be cleared prior to analysis.


Testing is performed Monday through Sunday.

Routine orders: Typically completed within 4 hours; Mercy DV and MA West within 24 hours

Expedite orders: Typically completed within 1 hour after the specimen arrives at the testing site.

STAT orders: Typically completed within 30 minutes after the specimen arrives at the testing site.

Reference Values

11-54 IU/L

CPT Code Information

84460 Chemistry: Transferase alanine amino (ALT) (SGPT)

Useful For

Diagnosis and monitoring of liver disease associated with hepatic necrosis.

LOINC Code Information

1742-6 Alanine Aminotransferase [Enzymatic Activity/Volume] In Serum or Plasma