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pH, Feces
Test CodeSTOOLPH
CPT Codes
83986
Preferred Specimen
5 grams liquid stool
Instructions
Random liquid or soft stool specimen collected in sterile plastic container or stool specimen container with spork (warehouse #77000). Adult and older children patients can collect the specimen by passing feces into plastic wrap stretched loosely over the toilet bowl. Then transfer 5 g of the stool specimen into the plastic container. With young children and infants wearing diapers, the diaper should be lined with clean plastic wrap to prevent absorption. A pediatric urine bag can be attached to the child to ensure that the stool specimen is not contaminated with urine. Then transfer 5 g of the stool specimen from the plastic lined diaper to the plastic container. Do not submit the diaper itself. Freeze and transport frozen.
Transport Container
Plastic screw-cap container
Transport Temperature
Frozen
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received thawed ;Fecal specimens received in paint can
Methodology
Potentiometry
Clinical Significance
As a screen for carbohydrate and fat malabsorption, and is also used to evaluate small intestinal disaccharidase deficiencies
