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Aspartate Transaminase

Message
Serum AST is one of a group of enzymes which catalyzes the interconversion of amino acids and keto acids by transfer of amino groups.  Transaminases are widely distributed in body tissues with significant amounts found in the heart and liver.


Test Code
AST


Alias/See Also
LAB3000114
AST
SGOT


CPT Codes
84450

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


Patient Preparation
None

Minimum Volume
0.5 mL serum


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


Specimen Stability
24 hours at Room Temperature (15-25oC)
4 weeks when Refrigerated (2-8o)
1 year when frozen at <-20oC


Reference Range
 
Sex Age Reference Range
M/F 0 - 7 days 13 - 80 U/L
M/F 8 days - 150 years 13 - 40 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.