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Troubleshooting a Periodic Acid Schiff (PAS) Stain After Diastase Digestion

Specialty:

Clinical Laboratory

Objective:

ICD-10:

Description:

The Periodic Acid-Schiff (PAS) stain identifies glycogen and other tissue carbohydrates. Diastase is an enzyme that digests the glycogen. A PAS stain performed after diastase digestion will be negative.

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