Multiplex PCR (Multiplex PCR) tests look for the genetic material (DNA/RNA) of a panel of 13 common sexually transmitted pathogens. These typically include: Bacteria: Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium, Ureaplasma urealyticum, Treponema pallidum (syphilis); Viruses: Herpes Simplex Virus (HSV-1 & 2), high-risk Human Papillomavirus (HPV), Hepatitis B Virus (HBV); Parasite: Trichomonas vaginalis. Some panels may also include Mycoplasma hominis and HIV-1.