Sodium, Fecal
Also known as: FE-NA
Use
The Sodium, Fecal test measures the concentration of sodium in fecal matter, which can be useful in diagnosing electrolyte imbalances or malabsorption syndromes. Such measurements are relevant in clinical scenarios involving chronic diarrhea, inflammatory bowel disease, or other gastrointestinal conditions affecting fluid balance.
Special Instructions
The test requires specific specimen preparation and handling instructions, including transferring stool to an unpreserved transport vial. It is crucial not to add saline or water to liquefy the specimen.
Limitations
The interpretive reference range for fecal specimens has not been established, and consequently, results should be interpreted in the context of the entire clinical picture and other laboratory findings. Additionally, formed or viscous stool specimens are unsuitable for analysis and will be rejected.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 15207-4
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Stool
Volume
5 g
Minimum Volume
1 g
Container
unpreserved stool transport vial (ARUP Supply #40910)
Collection Instructions
Transfer a 5 g stool to an unpreserved stool transport vial. Do not add saline or water to liquefy specimen.
Storage Instructions
Refrigerated.
Causes for Rejection
Formed or viscous stool.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 1 hour |
| Refrigerated | 2 weeks |
| Frozen | 6 months |
Other tests from different labs that may be relevant