Detection of Antibodies against Pgp3 by Multiplex Bead Array (MBA), Enzyme linked immunosorbent assay (ELISA), and Lateral Flow Assay (LFA). Data shown are number and percent antibody positive total and of those with nucleic acid amplification testing (NAAT) data. Data show the number represented in each group testing positive for antibody responses to the C. trachomatis antigen Pgp3 of the total. Percentages represent percentage of anti-Pgp3+ samples testing positive by each test. Ab = antibody.