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HelpTest Code ALT Alanine Aminotransferase
EHR Test Codes
| Test Code | Test Name | |
| Atlas | ALT | ALT/GPT |
| Cerner | ALT | Alanine aminotransferase |
Specimen Requirements
Preparation of Patient:
None
Container Type:
Green Top 5mL Lithium Heparin Separator Tube
Or
Gold Top 6mL SST Gel & Clot Activator Tube
Specimen Type:
Plasma or Serum
Specimen Volume:
2.5 mL Plasma or Serum minimum .5 mL
Specimen Handling/Transport:
Separate plasma or serum from cells within 2 hours of collection.
Transport ambient room temperature.
Specimen Stability/Storage:
5 days refrigerated 2-8°C
Performing Laboratory
Munson Healthcare Laboratories
Priority, Frequency, & Turnaround
Priority:
STAT, ASAP, Non-Emergent
Frequency:
24 hours 7 days a week
Turnaround:
0 - 1 days
STAT 60 minute from receipt in lab
Methodology
Enzymatic Rate Reaction L-alanine to pyruvate
Reporting
Reference Range:
Males: 7-55 U/L
Females: 7-38 U/L
Critical Decision:
Pediatric patients up to 21 years old ≥ 150 IU/L
Note: Critical values are called to the provider and communicated as critical. Documentation of the call is recorded in the patient record.
Clinical Significance
Significant elevations of ALT occur only in disease of the liver. ALT is often measured in conjunction with AST to determine whether the source of elevated AST is liver or the heart.
CPT Code(s)
84460