pH, Fecal
Use
The pH, Fecal test is used to measure the acidity or alkalinity of a fecal sample. The test is commonly utilized to evaluate conditions such as lactose intolerance, malabsorption syndromes, and other gastrointestinal disorders. The pH level can help assess the state of the gut environment and the presence of certain bacterial activities that may affect digestion. Evaluating fecal pH can also provide insight into the body’s metabolic processes and identify abnormalities that may indicate the need for further diagnostic evaluation or treatment.
Special Instructions
When ordering, ensure that separate specimens are submitted if multiple tests are requested. The sample must be sent frozen to preserve the integrity of the specimen. Proper adherence to specimen collection and handling instructions is crucial for accurate results.
Limitations
The test is limited by its dependence on proper specimen collection and handling. Gross hemolysis, thawing beyond allowed limits, and contamination with substances like barium can lead to sample rejection. Additionally, specimens in diapers, media, or preservatives are not acceptable. The test results may be affected by improper specimen stability and the presence of interfering substances. Accurate diagnostics depend on the correct handling and timely transport of the specimen to the laboratory.
New York Approved
Methodology
Other
Biomarkers
LOINC Codes
- 2755-7
- 2755-7
Result Turnaround Time
1-7 days
Related Documents
For more information, please review the documents below
Specimen
Stool
Volume
5 g
Minimum Volume
1 g
Container
Stool container
Collection Instructions
Collect a random unpreserved fecal specimen. Send frozen.
Causes for Rejection
Gross hemolysis, thawing (warm), diapers, specimens containing barium, specimens in media or preservatives, grossly bloody specimens
Stability Requirements
| Temperature | Period |
|---|---|
| Refrigerated | 14 days |
| Frozen | 14 days |