Insert the swab into the nostril and extend straight back (not up the nose) until the posterior nasopharynx is reached.
Gently twist to remove it.

Insert swab sample into the extraction buffer solution.
Stir the swab sample at least five times, then remove it.

Transfer 90μl (±3 drops) of the extracted specimen to the cassette.
Check the result within 10 to 15 minutes.