Answer: Sudan IV Test
Step-by-step explanation:
Sudan IV is used to test for the presence of lipids, or fats. It causes only lipids to turn from their regular color to red. Carbohydrates and proteins will not react or turn red when exposed to Sudan IV.
Sudan IV, also called Scarlet red and Fat Ponceau R, is a fat-soluble dye often used for staining triglycerides, lipids and lipoproteins present in cells and tissues.