Used for the detection and quantification of antibodies against Haemophilus influenzae type b (Hib) in human serum or plasma. Commonly applied in clinical diagnostics and immunological research to assess immune response following vaccination. Supports epidemiological studies by measuring seroprevalence in populations. Also utilized in vaccine development and evaluation to determine vaccine efficacy and correlate antibody levels with protection. The assay is suitable for high-throughput screening in laboratories due to its reliability and ease of use.