<prompt> Answer this question truthfullyWhat other diagnostic tests are available for pertussis?  <response>: <reason> Direct fluorescent antibody DFA DFA is inexpensive and may provide rapid results. Its drawbacks, however, include poor sensitivity and specificity. Pulsed-field gel electrophoresis PFGE PFGE is a DNA fingerprinting technique that has the following advantages: Highly discriminating in its results Easily applicable to Bordetella pertussis Stable and easily reproduced PFGEs drawbacks include duration of time to perform as well as required a specifically trained and skilled technician. 