AST
| Sunquest Code: | AST | ||
| Epic Code: | LAB131 | Epic Name: | AST |
| Order Instructions: | 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. | ||
| Synonyms: | Aspartate Aminotransferase; SGOT; Transaminase, LFT, Liver | ||
| Methodology: | Bichromatic rate | ||
| Turnaround Time: | Performed and reported 24 hours/day. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2.5 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Green (lithium heparin, gel) (Green (lithium heparin) on ICE, Red (no gel), Red or gold (gel)) |
| Causes for Rejection: | Hemolysis. |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | Stability: Room temperature - 3 days; refrigerated - 7 days; frozen - 1 month. |
| Test Performed at or Referral Lab | Chemistry (University of Minnesota Health Maple Grove Clinics, Fairview Range - FRMC, UMMC-East Bank, Oxboro Bloom, Fairview Lakes - FLMC, Fairview Ridges - FRH, Fairview Northland - FNMC, Fairview Southdale - FSH, UMMC/UMMCH-West Bank, M Health Clinic and Surgery Center, Grand Itasca GICH) |
Interpretive
| Critical Range: | Initial results greater than 500 U/L | ||||||||||||||||
| Reference Range: |
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| Use: | Evaluation of suspected hepatic disease. |
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