Used to measure fumarate hydratase (FUM) enzyme activity in human biological samples such as serum, plasma, or tissue extracts. This ELISA kit is commonly applied in clinical research and diagnostics to study metabolic disorders linked to the tricarboxylic acid (TCA) cycle, particularly fumarate hydratase deficiency. It supports investigation into mitochondrial dysfunction, neurodegenerative diseases, and certain cancers where FUM activity is altered. The assay enables high-throughput, quantitative analysis, making it valuable for biomarker studies and monitoring disease progression or treatment response in metabolic and mitochondrial conditions.