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Alanine Aminotransferase

Message
Alanine aminotransferase (ALT) measurements are useful in the diagnosis and treatment of certain liver diseases and heart disease.  ALT is an enzyme involved in amino acid metabolism and is, therefore, found in many tissues.


Test Code
ALT


Alias/See Also
LAB3000115
ALT
SGPT


CPT Codes
84460

Preferred Specimen
2.0 mL serum collected in a serum separator tube (SST)


Patient Preparation
None

Minimum Volume
0.5 mL serum


Other Acceptable Specimens
2.0 mL serum collected in a rapid clot tube (RCT)
2.0 mL plasma collected in a lithium heparin plasma separator tube (PST)


Instructions
Separate serum or plasma from cells as soon as possible.


Specimen Stability
3 days when stored Refrigerated (2-8oC)


Methodology
The ALT procedure is based on principles outlined by Wroblewski and LaDuel and utilizes a modification of the metholodgy recommended by the IFCC.

Reference Range
 
Sex Age Reference Range
M/F 0 - 150 years 7 - 52 U/L


Performing Laboratory
Penn Medicine Lancaster General Health



The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.