Stool Fat Analysis Test - Stool Fat Analysis (Sudan III Stain)

A qualitative microscopic examination of stool using Sudan stain III (or IV), a lipid stain that stains triglycerides, free fatty acids, and cholesterol orange-red under a microscope, aims to detect the presence of excess fat (steatorrhea), which indicates impaired fat digestion or absorption due to diseases of the pancreas, liver, bile ducts, or small intestine.