Obtain saliva sample in AM, before brushing teeth, eating, drinking, smoking, etc. Clean lens (do not submerge), place small drop of saliva from under tongue on lens, allow saliva to dry completely. Read "fern" pattern with ovulation microscope (see literature).
Do not use as a contraceptive. Infection or acute inflammation of throat or mouth may interfere with results. Avoid exposing device to weather extremes.
Medications, smoking, alcohol, food residue may interfere with results.