Nylon swabs with plastic handles, polyester swabs, flocked swabs (can absorb more biological samples and achieve a higher release rate) or artificial cotton swabs. Coronavirus Swab Coronavirus Swab Before the collection, rinse the mouth with normal saline, let the patient tilt his head slightly, and ask him to open his mouth to make an "ah" sound. If necessary, use a tongue depressor to lightly press the tongue surface to expose the throat, hold a sterile swab, and wipe with a sensitive and gentle motion Wipe the secretions and epithelial tissues on both sides of the palatine arch, pharynx and tonsil...