Sihombing, Y.R., Romauli Anna Teresia Marbun, Lenni Rismayanti, Ratih Anggraeni, Octavian Ashido Nababan and Kristian Cahayani Zebua 2024. Comparison Of Naso Faring And Oro Pharynx Swab Samples On Positivity Rate For Covid – 19 With The Reverse Transcription Method Pcr (Rt–Pcr) In The Lab. Rsud Pcr. City Padang Sidempuan. JURNAL FARMASIMED (JFM). 6, 2 (Apr. 2024), 106–114. DOI:https://doi.org/10.35451/jfm.v6i2.2021.