Bristol Stool Chart
REFStool Classification (Types 1-7)
Type 1
Separate hard lumps · Hard to pass (severe constipation)
Type 2
Lumpy and sausage-like · Mild constipation
Type 3
Sausage with cracks on surface · Normal
Type 4
Smooth, soft sausage or snake · Normal (ideal)
Type 5
Soft blobs with clear edges · Lacking fiber
Type 6
Mushy consistency with ragged edges · Mild diarrhea
Type 7
Liquid, no solid pieces · Severe diarrhea
About the Bristol Stool Chart
The Bristol Stool Chart is a medical tool designed to classify stool into seven categories based on shape and consistency. Types 3 and 4 are considered ideal, indicating healthy bowel function. The chart helps healthcare providers and patients communicate about digestive health. Persistent changes in stool type may indicate dietary issues or health conditions requiring medical attention.
Source
Bristol Royal Infirmary Medical Classification