Tilt your head back and fully insert the soft swab tip straight back (not up) into your nose until you hit resistance (up to 2.5 cm). Make sure the soft swab tip is fully inside the nose. 4. Rotate the swab several times against the wall of the nose and let it sit for a few seconds to absorb nasal secretions.   china shenzhen huaree tech Biological, Disposable sterile sampling swab,...