Advanced Diagnostic Laboratories

Collect

Plain red top or SST tube.

Specimen Preparation

Onsite [NJH]: Transport to lab within 1 hour.

Offsite: Separate serum from cells within 2 hours by centrifuge and aliquot into a labeled polypropylene or similar plastic tube.

Preferred volume: 1 mL serum

Pediatric Collection

Minimum volume: 0.1 mL serum

Storage Transport Temp

Offsite: Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.

Stability

Stability after cell separation:
24 hours at RT (15-25°C)
4 weeks at 2-8°C
1 year frozen at ≥ -20°C

Performed

Mon-Fri

Methodology

Enzymatic

Reported

4 hour routine, 1 hour STAT

Department

Core Lab

Synonyms

Enzymatic (Aspartate Transaminase, Serum);ASTX

Reference Interval

Aspartate Transaminase, Serum	Human
	Male	Female
	U/L
Newborn - 5 years	22-58	18-63
6 years - 9 years	22-44	21-36
10 years - 19 years	13-38	14-37
20+ years	10-40	10-40

CPT Code

84450