Stool pH, Fecal pH
EPIC: LAB5359, SOFT: PHSTO
Barium procedures and laxatives should be avoided for one week prior to collection of the specimen.
Specimen Collection Criteria
Collect: Random stool specimen in a sterile collection cup.
- Stool must be liquid in consistency. Formed (solid) stool will NOT be accepted.
- Refrigerate the specimen immediately after collection.
Physician Office/Draw Specimen Preparation
Refrigerate (2-8°C or 36-46°F) the specimen immediately after collection. Freeze (-20°C/-4°F or below) specimens that will not be received in the Laboratory within one hour of collection.
Preparation for Courier Transport
Transport: Stool specimen, frozen (-20°C/-4°F or below).
Formed (solid) stool specimens.
Specimens not collected and processed as indicated.
The specimen should be frozen (-20°C/-4°F or below) if not analyzed within one hour of collection.
Specimen Stability for Testing:
Room Temperature (20-26°C or 68-78.8°F): Unacceptable
Refrigerated (2-8°C or 36-46°F): 1 hour
Frozen (-20°C/-4°F or below): Undetermined
Specimen Storage in Department Prior to Disposal:
Specimens are disposed within 48 hours of testing.
Royal Oak Automated Chemistry Laboratory
Sunday – Saturday, 24 hours a day.
Results available within 24 hours.
0-30 Days (Newborns): 5.0 - 7.0.
Older than 30 Days: 7.0 - 7.5.
Manual pH test strip.
- Decreased stool pH may be due to intestinal lactase deficiency, high lactose intake or decreased absorption of fat or carbohydrates.
- Increased stool pH may be seen in secretory diarrhea without food intake, colitis, villous adenoma or increased protein breakdown.
Stool pH may be used as a screening test for carbohydrate and fat malabsorption. It may also aid in the evaluation of small intestinal disaccharidase deficiencies.
Automated Chemistry Laboratory – RO
Microtainer® and Vacutainer® are registered trademarks of Becton, Dickinson and Company.
UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.
This directory currently reflects information only for specimens collected and/or processed at the
Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.