AST


Abbrev Code:AST   
Order Code:LAB131Order Name:AST
Synonyms:Aspartate Aminotransferase; SGOT; Transaminase, LFT
Methodology:Roche: IFCC with pyridoxal phosphate activation
Woodwinds: NADH
CPT Codes: 84450 x1, 84450 x1
Turnaround Time:Performed and reported 24 hours/day.
Associated Links:

Roche Go Live Schedule



Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Collection Instructions:Chemistry Tests Containers Chart
Causes for Rejection:Hemolysis, excessive lipemia.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot within 2 hours of collection 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Note: AST can be falsely elevated if the platelet layer on top of the gel is disturbed. Re-centrifuge pre-processed tube received from an outside source, or if the tube is dropped.
Shipping Instructions:Ship at refrigerated temperature.
Stability:Roche: 7 days refrigerated; 3 months frozen.
Test Performed at or Referral Lab Chemistry  (Roche-CSC Maple Grove, Roche-CSC Mpls, Roche-Grand Itasca, Roche-Lakes, Roche-Northland, Roche-Range, Roche-Ridges, Roche-Southdale, Roche-St. John's, Roche-UMMC East, Roche-UMMC West, Woodwinds)


Interpretive

Critical Range:Hepatic Panel Critical Values and Reference Ranges
Reference Range:Hepatic Panel Critical Values and Reference Ranges
Use:Evaluation of suspected hepatic disease.


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