Macro AST

Alphabetical Test listing

Macro AST-994

  
Macro AST
  
994
  
LAB994
  
MSO
  
  • Determining biologically active levels of AST, in asymptomatic patients with elevated AST levels
  • Ruling out the presence of macroAST
  
Serum
  

Gold serum separator (SST) tube

  
1.0 mL
  
0.6 mL
  

Spin and separate within 2 hours of collection

  
  
  

Spin and transfer serum to a Screw cap transfer vial/tube (Mayo T465) within two (2) hours of specimen collection

  

Screw cap transfer vial/tube (Mayo T465)

  

Refrigerated (preferred) - 7 days

Ambient - 7 days

Frozen - 30 days

  
Mayo Clinic Laboratories (ZW10): R-NX
  
Daily
  
1 - 2 days
  

Photometric Rate, L-Aspartate with Pyridoxyl-5-Phosphate

  

Male
0 – 11 months: Not established
1 – 13 years:    8 – 60 U/L
≥14 years:       8 – 48 U/L

Female
0 – 11 months: Not established
1 – 13 years:    8 – 50 U/L
≥14 years:       8 – 43 U/L

Percent of the precipitated (complexed) AST fraction of total AST >80% (considered positive for macroAST).

  
No CPT
  
11/14/2019
  
11/15/2019