AST
Abbrev Code: | AST | ||
Order Code: | LAB131 | Order Name: | AST |
Synonyms: | Aspartate Aminotransferase; SGOT; Transaminase, LFT | ||
Methodology: | Roche: IFCC with pyridoxal phosphate activation
Woodwinds: NADH |
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CPT Codes: | 84450 x1, 84450 x1 | ||
Turnaround Time: | Performed and reported 24 hours/day. | ||
Associated Links: |
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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