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Laboratory Information

Test Name

Alanine Amino Transferase

Synonyms

ALT

Specimen Collection

Adult Specimen

Heparin (light green), SST(gold) "T-" labs SST (gold)

Paediatric Specimen

0.3ml Heparin (light green) or SST (gold) or plain ( red)

Test Information

Department

Biochemistry

Test Availability

Mon - Sun, 24hrs

Laboratory Turnaround Time

3 hrs

Method

Waikato: Cobas Pro ."T"-Labs: Vitros XT7600

Unit of measurement

U/L

Reference interval

<55 U/L

Uncertainty of measurement

Waikato - 5% Rural Waikato Labs - 10%

Additional Information

Haemolysis causes false elevation.

Cobas Pro: Interference by therapeutic levels of Sulfasalazine and Sulfapyridine cause a significant false decrease in ALT. Following iron infusions, ALT may be falsely low or unmeasurable for up to 24 hours.

Minimum Volume

0.1 mL heparin plasma or serum.

Electronic Information

Registration Code

ALT

HL7 mapping code

$ALT

LOINC Code

1742-6

Laboratory Test Reference Guide