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Vanderbilt Pathology Laboratory Services

Test Directory



AST (AST)

Department: Chemistry
Test Synonym(s): SGOT, Aspartate transaminase
CPT Codes: 84450
Methodology: Kinetic Coupled Enzymatic Assay
Reference Range: CALIPER 0 to 14 days: 32 -162 U/L; 15 days to <1 yr: 20-67 U/L; 1 yr to <7 yrs: 21-44 U/L; 7 yrs to <12 yrs: 18-36 U/L; 12 yrs to < 19 yrs: 14-35 U/L; Abbott 19 to 150 yrs: 5-40 U/L (Pediatric Reference Ranges only verified for serum, see CALIPER Study at CaliperDatabase.com)
Tube Type: Light green PST (Lithium Heparin with gel) tube - 4.5 mL
Specimen: Plasma
Pediatric Requirements: 1 light green top microtainer
Volume: 1 mL plasma
Minimum Volume: 0.3 mL plasma
Temperature: Separate within 1 hour and store/ship @ ambient temperature until delivery.
Stability: < 3 days at 2 - 8C; 6 months at -20C
Reasons for Rejection: Hemolysis, improper collection
Days Performed: Daily
Times Performed: Continuous
TAT: STAT: 1 hour; ROUTINE: 2 hours after receiving in lab

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