GALACTOSE-1-PHOSPHATE URIDYLTRANSFERASE

Components
Galactosmia (GALT) enzyme test. Initial test to diagnose or rule out galactosemia.

Specimen Required
Draw blood in a lavender EDTA tube. Send 7.0 mL whole blood (3.0 mL minimum) refrigerated.

Alternate Specimen
Whole blood: Sodium or lithium heparin

Rejection Criteria
Grossly hemolyzed specimens

Methodology
Enzymatic

Stability
Room Temperature: Unacceptable; Refrigerated: 5 days; Frozen: Unacceptable

Reference Range
14.7-25.4 U/g of Hb

Performed
Monday, Wednesday, Friday

Turnaround Time6-10 days
Test CodeG1PU
CPT-4 Code (s)
82775
LOINC Codes
10970-2

Warde
Medical
Laboratory