Amplite? Fluorimetric Malondialdehyde (MDA) Quantitation Kit. Malondialdehyde (MDA) and 4-hydroxynonenal (4-HNE) are natural byproducts of lipid peroxidation. As the most popular and reliable biomarker for lipid peroxidation, MDA has been widely used for many years to determine oxidative stress in clinical situations. Therefore, quantification of MDA is essential to assess oxidative stress in pathophysiological processes. The Amplite? Fluorimetric Malondialdehyde (MDA) Quantitation Kit offers a quick and convenient method to measure MDA without heating steps that are required for the commercial MDA assay kits from other vendors. Monoaldelite? Blue itself is nearly non-fluorescent, but generates strong blue fluorescence upon reacting with MDA.