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Test Code GATOL Galactitol, Quantitative, Urine

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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)


Necessary Information


Patient's age is required.



Specimen Required


Supplies: Urine Tubes, 10 mL (T068)

Container/Tube: Plastic, 10-mL urine tube (T068)

Specimen Volume: 2 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.


Reporting Name

Galactitol, QN, U

Specimen Type

Urine

Specimen Minimum Volume

1 mL

Specimen Stability Information

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

Reject Due To

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

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) and Time(s) Performed

Tuesday; 8 a.m.

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.

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

Forms

If not ordering electronically, complete, print, and send an Inborn Errors of Metabolism Test Request (T798) with the specimen.