Carbohydrate, Urine
Test Mnemonic
UCARB
CPT Codes
- 84379 - QTY (1)
LOINC ®
16550-6
Includes
- Interpretation
- Reducing Substances
- Xylose
- Fructose
- Galactose
- Glucose
- Sucrose
- Lactose
- Maltose
- Raffinose
Performing Laboratory
Mayo Clinic Dpt of Lab Med & Pathology
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 5 mL | Urine, random | Clean container | Frozen, Critical | Patient age is required. Early-morning random urine specimen is preferred. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Frozen | 42 days |
| Refrigerated | Unacceptable |
| Ambient | Unacceptable |
Days Performed
Tue
Turnaround Time
4 - 10 days
Methodology
| Name | Description |
|---|---|
| Gas Chromatography Mass Spectrometry (GCMS) |
Special Info
Patient age is required. Early-morning random urine specimen is preferred. This test is New York state approved.
Clinical Info
This test may be useful for screening for conditions associated with increased excretion of fructose, galactose, and xylose. Qualitative testing for the presence of reducing substances is performed first followed by quantitative analysis of carbohydrates including fructose, galactose, xylose, glucose, sucrose, lactose, maltose, and raffinose.
Clinical Limitation
This test is not appropriate for evaluation of an abnormal newborn screening for galactosemia.