Stool pH
The acidity or alkalinity of stool, reflecting colonic fermentation and absorption.
Why it matters: Low pH suggests carbohydrate malabsorption, high pH suggests protein malabsorption or bacterial overgrowth.
May increase with:
May decrease with:
What is Stool pH?
The acidity or alkalinity of stool, reflecting colonic fermentation and absorption.
What might a high or low Stool pH mean?
Low pH suggests carbohydrate malabsorption, high pH suggests protein malabsorption or bacterial overgrowth.
What is the typical reference range for Stool pH?
The general-population reference range shown here is 6 – 8 . Reference ranges describe the general population and are not a personal target — discuss your results with your physician.
What can affect Stool pH?
It may be higher with: Protein malabsorption, Colonic alkalinization, Bacterial overgrowth. It may be lower with: Carbohydrate malabsorption, Lactose intolerance, Colonic acidification.