Myoglobin Serum/Whole Blood Rapid Test is a sandwich immunoassay. When serum sample is added to sample pad, it moves through the conjugate pad and mobilizes gold anti-myoglobin conjugate that is coated on the conjugate pad. The mixture moves along the membrane by capillary action and reacts with anti- myoglobin antibody that is coated on the test region. If myoglobin is present at levels of 100 ng/mL or greater, the result is the formation of a colored band in the test region. If there is no myoglobin in the sample, the area will remain colorless. The sample continues to move to the control area and forms a pink to purple color, indicating the test is working and the result is valid.