Aspartate Aminotransferase

Last Modified: 1/27/2022 8:11:25 AM

Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements: 1.0 mL Plasma from a PST Mint Green Top Tube - Lithium Heparin (preferred)
1.0 mL Serum in a SST Gold Top Tube
Collection Instructions: Do not collect by capillary draw

Avoid Hemoloysis
Minimum Volume: 0.2 mL
Transport & Storage: Temperature/Stability: 7 days Refrigerated

24 hours unspun
Reference Range:

1 day to 1 month: 23 - 56 Units/L
1 month to 1 year: 19 - 46 Units/L
1 year to Adult: 15 - 37 Units/L

Critical Ranges:  
Test Comments: For elevated results: 
Occasionally, AST might be falsely elevated due to the presence of immunoglobulin-AST-complex.  When high concentrations of serum AST are observed in the absence of organ-specific disease, high levels of AST should be investigated for the presence of immunoglobulin-complexed enzyme as a cause for such results.
Methodology: Enzymatic
Clinical Significance:  
Custom Panel: No


Stat Eligible: Yes
Days Performed: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Parkview Dekalb, Parkview Hospital Randallia, Parkview Huntington, Parkview LaGrange, Parkview Noble, Parkview Regional Medical Center, Parkview Wabash, Parkview Warsaw , Parkview Whitley
PHL Test Code: AST
EPIC Test Code: LAB131
Alternate Test Names: AST; AST (SGOT); SGOT
Included Tests:  
CPT Coding: 84450

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