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


Necessary Information


Patient's age and sex are required.



Specimen Required


Container/Tube:

Preferred: Serum gel

Acceptable: Red top

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 aliquoted within 2 hours of collection.


Useful For

Diagnosis and monitoring of liver disease associated with hepatic necrosis

Method Name

Photometric Rate, L-Alanine with Pyridoxal-5-Phosphate

Reporting Name

Alanine Aminotransferase (ALT), S

Specimen Type

Serum

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 7 days
  Frozen  7 days

Reject Due To

Gross hemolysis Reject

Reference Values

Males

≥1 year: 7-55 U/L

Reference values have not been established for patients who are <12 months of age.

Females

≥1 year: 7-45 U/L

Reference values have not been established for patients who are <12 months of age.

Day(s) Performed

Monday through Sunday

Report Available

Same day/1 to 2 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

84460

LOINC Code Information

Test ID Test Order Name Order LOINC Value
ALT Alanine Aminotransferase (ALT), S 1743-4

 

Result ID Test Result Name Result LOINC Value
ALT Alanine Aminotransferase (ALT), S 1743-4