infection (1) analysis (1) enzyme (1) assay (1) Methods (1) France, Southwest (1) Variations (1) Serum (1) Population (1) Performance (1) Patients (1) Infection (1) Immunoglobulin G (1) Blood donors (1) Blood (1) Antigens (1) Methods (1) Analysis (1) Settings (1) Reactivity (1) Population (1) Patients (1) Performance (1)