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pH, stool
| Item | Value |
|---|---|
| Approval req'd? | No |
| Available Stat? | No |
| Test code | PHF |
| Test group | pH |
| Performed by | Parnassus Hematology |
| In House Availability | 8:00 AM - 4:00 PM daily |
| Method | pH strip |
| 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. |
| Units | pH |
| 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 | 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 |
| CPT coding | 83986 |
| Last Updated | 3/9/2010 10:52:40 AM |
| Entry Number | 733 |
If you have additional questions regarding this test, please call: 415-353-1667