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Test ID GALU Galactose, Quantitative, Urine

Useful For

Screening test for galactosemia

Highlights

Galactose-1-phosphate uridyltransferase (GALT) deficiency is the most common cause of galactosemia and requires lifelong restriction of dietary galactose.

 

Classic galactosemia can be diagnosed by analysis of GALT enzyme.

Special Instructions

Method Name

Spectrophotometric, Kinetic

Reporting Name

Galactose, QN, U

Specimen Type

Urine

Specimen Required

Collection Container/Tube: Clean, plastic urine collection container

Submission Container/Tube: Plastic, 5-mL tube (T465)

Specimen Volume: 1 mL

Collection Instructions: Collect a random urine specimen.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Frozen (preferred) 365 days
  Ambient  20 days
  Refrigerated  20 days

Reference Values

<30 mg/dL

Day(s) and Time(s) Performed

Varies

Performing Laboratory

Mayo Medical Laboratories in Rochester

CPT Code Information

82760

LOINC Code Information

Test ID Test Order Name Order LOINC Value
GALU Galactose, QN, U 2310-1

 

Result ID Test Result Name Result LOINC Value
8765 Galactose, QN, U 2310-1

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

Testing Algorithm

This test is not appropriate for the diagnosis or monitoring of galactosemia. For diagnosis, see GCT / Galactosemia Reflex, Blood. For monitoring, see GAL1P / Galactose-1-Phosphate (Gal-1-P), Erythrocytes.

 

See Galactosemia Testing Algorithm in Special Instructions