Used in biomedical research to quantify levels of the Bid protein, which plays a key role in apoptosis signaling pathways. This ELISA kit enables researchers to measure Bid in cell lysates or tissue samples, helping study mechanisms of programmed cell death in conditions like cancer, neurodegenerative diseases, and liver injury. It supports investigations into how apoptotic pathways are activated or disrupted, and is useful in drug development for evaluating the impact of therapeutic agents on apoptosis regulation. The assay provides a sensitive and specific method for detecting both full-length and cleaved forms of Bid, allowing insight into caspase activation and mitochondrial involvement in cell death.