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HelpTest ID GATOL Galactitol, Quantitative, Urine
Useful For
Monitoring effectiveness of treatment in patients with galactosemia
Establishing a baseline level prior to initiating treatment for galactosemia
Genetics Test Information
This test may be used as an aid in the diagnosis of galactosemia.
Urinary galactitol is often not affected by acute dietary ingestion of galactose; therefore, it is not a substitute for GAL1P / Galactose-1-Phosphate (Gal-1-P), Erythrocytes in monitoring diet.
Method Name
Gas Chromatography/Mass Spectrometry (GC/MS)
Reporting Name
Galactitol, QN, USpecimen Type
UrineNecessary 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.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| 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) and Time(s) Performed
Tuesday; 8 a.m.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
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 |
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.Forms
If not ordering electronically, complete, print, and send an Inborn Errors of Metabolism Test Request (T798) with the specimen.