Used in biomedical research to quantify leukotriene C4 levels in biological samples such as plasma, serum, or cell culture supernatants. Helps in studying inflammatory responses, immune system activation, and allergic reactions in primate models. Commonly applied in asthma research, autoimmune disease studies, and drug development where modulation of eicosanoid pathways is investigated. Provides a sensitive and specific means to assess cysteinyl leukotriene production in experimental settings involving non-human primates.