What other test have you ever seen that jams something thsi far past your palate?  It's done to innoculate (begin an infection) of a viral vector for recombinant gene therapy.  DO NOT take this type of test.  DO NOT take this particular vaccine. https://en.wikipedia.org/wiki/Viral_vector https://duckduckgo.com/?q=covid-19+test+swap+length&iar=images&iax=images&ia=images