Galactitol, Quantitative, Urine
Use
Useful for monitoring effectiveness of treatment in patients with galactosemia and establishing a baseline level prior to initiating treatment for 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.
Special Instructions
Patient’s age is required. If not ordering electronically, complete and send a Biochemical Genetics Test Request (T798) with the specimen.
Limitations
Urinary galactitol levels may not reflect acute and transient effects of galactose intake and therefore are not a substitute for galactose‑1‑phosphate measurement.
New York Approved
Methodology
Mass Spectrometry (LC‑MS/MS)
Biomarkers
LOINC Codes
- 47857‑8
- 47857‑8
- 59462‑2
- 18771‑6
Result Turnaround Time
3-7 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
2 mL
Minimum Volume
1 mL
Container
Plastic, 10‑mL urine tube
Collection Instructions
Collect a random urine specimen. No preservative.
Causes for Rejection
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 28 days |
| Frozen | 28 days |