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HelpTest Code GATOL Galactitol, Quantitative, Urine
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Galactitol, QN, USpecimen Type
UrineOrdering 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.
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 |
Specimen Minimum Volume
1 mL
Day(s) Performed
Tuesday, Friday
Specimen Retention Time
3 monthsReport Available
3 to 7 daysReference 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
Useful For
Monitoring effectiveness of treatment in patients with galactosemia
Establishing a baseline level prior to initiating treatment for galactosemia
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 |
Disease States
- 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 galactose-1-phosphate in monitoring diet.
Forms
If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.