Bordetella pertussis can be identified through various ways. Biochemical testing observes the physiology of a bacteria to determine its species. Polymerase chain reactions can also be used take a small sample of DNA and make many copies of it to identify the sequencing pairs. This also allow scientists to determine the species of the bacteria. Direct fluorescent antibody test can also be used to find pathogens. This is done by placing the tissue or fluid with the possible pathogen on a slide and labeled fluorescently. An anti-pathogenic antibody is then added to slide. If a pathogen is present, the pathogen with fluoresce when viewed under a fluorescent microscope. Finally, serologic tests can be performed. These test observe a patient’s blood
