AST


Abbrev Code:AST   
Order Code:LAB131Order 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
St Johns/St Joseph/Woodwinds: NADH
CPT Codes: 84450 x1
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), St Johns/St Joseph/Woodwinds-Green (lithium heparin, no gel)
Alternate Containers: Green (lithium heparin) on ICE, Red (no gel), Red or gold (gel), St Johns/St Joseph/Woodwinds - Red (no 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  (M Health Maple Grove Clinic, Range, UMMC-East Bank, Oxboro Bloom, Lakes, Ridges, Northland, Southdale, UMMC/UMMCH-West Bank, M Health Clinic and Surgery Center, Grand Itasca, St. Joseph's, St. John's, 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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