Used in biomedical research to quantify soluble TREM-1 in biological samples such as serum, plasma, and cell culture supernatants. Plays a key role in studying inflammatory responses associated with infections, sepsis, and autoimmune diseases. Helps assess the activation of myeloid cells, including neutrophils and monocytes, providing insights into disease progression and therapeutic efficacy. Widely applied in clinical research and drug development to evaluate biomarkers of inflammation and immune system modulation.