Muscle Fiber, Stool

Test ID: 


CPT code:



  • Muscle Fiber, Stool
  • Stool Meat Fibers
  • Stool Muscle Fiber

Clinical Use:

Evaluate malabsorption syndromes, pancreatic exocrine dysfunction, or gastrocolic fistula.

Specimen Type:

Stool (random)

Requested Volume: 

3 g

Minimum Volume: 

1 g

Container Type: 

Plastic screw-cap vial

Patient Preparation: 

Patient is required to eat adequate amounts of red meat for 24 to 72 hours before testing. Specimens obtained with a warm saline enema or Fleet® Phospho-Soda® are acceptable. Specimens obtained with mineral oil, bismuth, or magnesium compounds are unsatisfactory. Barium procedures or laxatives should be avoided for one week prior to collection of the specimen.


Do not contaminate outside of container; do not overfill container.

Storage Instructions:

Refrigerate at 2°C to 8°C. Do not freeze.

Rejection Criteria

Purgatives other than saline or Fleet®; specimen contaminated with urine; specimen obtained with mineral oil, bismuth, or magnesium compounds; specimen on outside of container


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MCI Diagnostic

Providing top patient care with fast results. 

7018 South Utica Avenue

Tulsa, Oklahoma 74136

Hours of Operation

Mon – Sat: 7AM-11PM

Sun: 7AM-3PM

Government Contract

Mon – Sat: 7AM-11PM

Sun: 7AM-3PM


Mon – Sat: 7AM-11PM

Sun: 7AM-3PM

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