Click here for more information about laboratory operations and procedures
If you have additional questions regarding this test, please call: 415-353-1667
(Not a routinely available test. See 'Additional information')
|Performed by||Parnassus & Mission Bay Hematology|
|In House Availability||8:00 AM - 4:00 PM daily|
|Collection Instructions||Collect stool in plastic-lined diapers or non-absorbent material|
|Container type||Clean container without preservative|
|Amount to Collect||See preferred volume|
|Sample type||Fresh loose or liquid stool|
|Preferred volume||10 g loose or liquid stool|
|Min. Volume||1/2 teaspoon loose or liquid stool|
|UCSF Rejection Criteria||Fully formed stool. Stools collected in cotton balls, absorbent diaper, swab or kits.|
|Processing notes||Deliver immediately to Hematology for testing. If testing is delayed freeze sample at -20C.|
|Normal range||> 6.5|
|Synonyms||stool analysis; disaccharide malabsorption; stool analysis|
|Stability||Frozen at -20C 48 hours|
|Turn around times||Same or next day.|
|Additional information||As normal samples are not available for validating the performance of this assay, the UCSF Clinical laboratory makes no claims with regard to the accuracy of the result.
All results will be appended with a disclaimer: "The reference range and other method performance specifications have not been established by the UCSF Clinical Laboratory for this body fluid. The test result must be integrated into the clinical context for interpretation."
Disaccharide malabsorption results in acidification of the stool from the production of short-chain fatty acids by colonic flora if antibiotics do not interfere, typically giving a pH < 5.5.
See also Reducing Substances, stool
|Last Updated||8/26/2015 1:52:38 PM|