Stool Muscle Fibers (Undigested)

Stool AnalysisStool

Intact, undigested muscle fibers with visible striations in stool.

Why it matters: Presence indicates significant pancreatic protease deficiency — fibers passed completely undigested.

What Moves It

May increase with:

Pancreatic insufficiency
Low stomach acid
Rapid transit
High protein diet

May decrease with:

Normal protease activity
Pancreatic enzyme supplementation
Proper chewing
Associated Conditions
Chronic pancreatitisCystic fibrosisAchlorhydriaExocrine pancreatic insufficiency
Related Markers
Stool Muscle Fibers (Digested)LipaseAmylaseStool Fat
Common questions

What is Stool Muscle Fibers (Undigested)?

Intact, undigested muscle fibers with visible striations in stool.

What might a high or low Stool Muscle Fibers (Undigested) mean?

Presence indicates significant pancreatic protease deficiency — fibers passed completely undigested.

What can affect Stool Muscle Fibers (Undigested)?

It may be higher with: Pancreatic insufficiency, Low stomach acid, Rapid transit, High protein diet. It may be lower with: Normal protease activity, Pancreatic enzyme supplementation, Proper chewing.

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