Specimen adequacy assay controls in nucleic acid amplification tests do not correlate with nasopharyngeal swab collection method.

Competing Interests: A.L.G. reports contract testing from Abbott, Cepheid, Novavax, Pfizer, Janssen, and Hologic, as well as research support from Gilead. M.L.B., E.G.D., C.A.T., and S.G. are employees of Pfizer, Inc.