Used in biomedical research to quantify Human Fibrinogen-like Protein 1 (FGL-1) levels in serum, plasma, and cell culture supernatants. It plays a key role in studies related to liver disease, cancer progression, and immune regulation, particularly in investigating FGL-1 as a biomarker for hepatocellular carcinoma and its interaction with the LAG-3 receptor in immune checkpoint pathways. The kit enables high-sensitivity detection, supporting clinical and experimental research into inflammatory conditions and potential therapeutic targets.