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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: ALT/SGPT

Test Code(s): ALT

CPT Code(s): 84460

Test Description: Included In: Comprehensive Metabolic Panel

Methodology: NADH with Pyridoxal-5 Phosphate

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.

Specimen Requirements

Specimen: Blood

Collection Container: Preferred: Green cap with yellow ring (PST)
Also Acceptable: Green top, Red cap with yellow ring (SST), Red top

Collection Volume: Preferred: 1 mL
Pediatrics: 0.4 mL

Sample Analyzed: Plasma or serum

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.2 mL

Specimen Processing: Centrifuge.  If a complete barrier has not formed, transfer cell-free plasma/serum to plastic vial.  Refrigerate.

Specimen Transport: Transport specimen to the laboratory. Transport with coolant pack if coming from outreach location.

Stability: Ambient: 24 hours
Refrigerated: 4 days
Frozen: 1 month at or below -20 C


Reference Interval:
Age: U/L
0 days and up, female: 13-59
0 days and up, male: 16-63

GPT Alanine Aminotransferase SGPT

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