Not meant to be a trick question, but we see this failure often, especially when the facility utilizes “test vans” for their One-Stop safety testing that includes Audiograms for HCP requiremenrts and Fit Testing for the RP program. This applies ONLY to those doing Quantitative Fit Testing (QNFT).
If we are doing QNFT, such as the Porta-Count method, Appendix A states:
(emphasis by me)