ARUP's Laboratory Test Directory

Galactose-1-Phosphate Uridyltransferase : 0080125
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Patient History For Galactosemia
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Additional Technical Information


Mnemonic: G1PUT

Methodology: Enzymatic
Performed: Mon, Wed, Fri
Reported: 2-4 days
Specimen Required: Collect: Green (sodium or lithium heparin), lavender (EDTA), or pink (K2EDTA). Collect on ice.

Specimen Preparation: DO NOT FREEZE. Transport 7 mL whole blood. (Min: 3 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Hemolyzed specimens.

Stability (collection to initiation of testing): Ambient: Unacceptable; Refrigerated: 5 days; Frozen: Unacceptable
Reference Interval:
14.7-25.4 U/g Hb
Interpretive Data: One U/g Hb is equivalent to one umol/hour/gram of hemoglobin (umol/hr/g Hb).

Note: Values for enzyme activity only may not differentiate between variant form of galactosemia or carriers. For a more accurate evaluation of patients suspected to have galactosemia, the preferred test is Galactosemia (GALT) Enzyme Activity and 9 Mutations (ARUP test code 0051175). To monitor therapy in patients with galactosemia, order Galactose-1-Phosphate in Red Blood Cells (ARUP test code 0081296).

See Compliance Statement B: www.aruplab.com/CS
Note: Enzyme activity only may not differentiate variant form of galactosemia or carriers.  For a more accurate evaluation of patients suspected to have galactosemia the preferred test is Galactosemia, Panel (0051175). To monitor therapy in patients with galactosemia, order Galactose-1-Phosphate in Red Blood Cells (0081296).
CPT Code(s): 82775
Cross References: Beutler Test (Galactose-1-Phosphate Uridyltransferase), Galactose 1 (Galactose-1-Phosphate Uridyltransferase), Galactosemia Confirmation (Galactose-1-Phosphate Uridyltransferase), Galactosemia Diagnosis (Galactose-1-Phosphate Uridyltransferase), GALT (Galactose-1-Phosphate Uridyltransferase), Transferase (Galactose-1-Phosphate Uridyltransferase)