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Test Code GATOL Galactitol, Quantitative, Urine

Reporting Name

Galactitol, QN, U

Useful For

Monitoring effectiveness of treatment in patients with galactosemia

 

Establishing a baseline level prior to initiating treatment for galactosemia

Method Name

Gas Chromatography Mass Spectrometry (GC-MS)

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Urine


Ordering Guidance


To monitor dietary ingestion of galactose, order GAL1P / Galactose-1-Phosphate, Erythrocytes.



Necessary Information


Patient's age is required.



Specimen Required


Supplies: Urine Tubes, 10 mL (T068)

Container/Tube: Plastic, 10-mL urine tube

Specimen Volume: 2 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.


Specimen Minimum Volume

1 mL

Reject Due To

  All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 28 days
  Frozen  28 days

Reference Values

0-11 months: <109 mmol/mol creatinine

1-3 years: <52 mmol/mol creatinine

4-17 years: <16 mmol/mol creatinine

≥18 years: <13 mmol/mol creatinine

Day(s) Performed

Tuesday, Friday

CPT Code Information

82542

LOINC Code Information

Test ID Test Order Name Order LOINC Value
GATOL Galactitol, QN, U 47857-8

 

Result ID Test Result Name Result LOINC Value
35831 Galactitol 47857-8
35832 Interpretation (GATOL) 59462-2
35833 Reviewed By 18771-6

Report Available

3 to 7 days

Test Classification

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