[header] How to test blood to make sure it's real [title] Gather the necessary materials. [step] In this experiment, you will be testing for the presence of catalase using hydrogen peroxide. Catalase is an enzyme in your cells that converts hydrogen peroxide into pure oxygen and water, causing a foaming action to occur. 
To use this test, you will need hydrogen peroxide, a microscope slide, a cotton swab, a small eyedropper, gloves, and the blood sample to test. [substeps] Standard 3% hydrogen peroxide found at the store works fine.