Muscle Fibers

Muscle fibers in microscopic stool sediment are parts of undigested muscle tissue that may appear in stool due to digestive disorders.

• Presence of muscle fibers indicates insufficient protein digestion in the gastrointestinal tract.
• This may be related to decreased activity of digestive enzymes, such as proteases.
• Frequent detection of muscle fibers is characteristic of pancreatic diseases, chronic pancreatitis, and other conditions impairing food digestion.
• Muscle fibers may also appear with rapid intestinal transit, when digestion is incomplete.
• Assessment of muscle fiber quantity helps physicians identify digestive impairments and plan further examination and treatment.

Absence of muscle fibers in stool is considered normal.