Used in biomedical research to quantify levels of follistatin-like protein 1 (FSTL1) in biological samples such as serum, plasma, and cell culture supernatants. Enables researchers to study the role of FSTL1 in inflammatory diseases, cardiovascular conditions, and autoimmune disorders. Commonly applied in preclinical studies to monitor disease progression and evaluate therapeutic interventions. Supports high-throughput screening and provides reliable, sensitive detection for investigating FSTL1 as a potential biomarker.