- Check that the thermometer lens is perfectly clean. If in doubt, clean the lens with a cotton swab lightly moistened with alcohol. After cleaning, wait 30 minutes before measuring again.
- Check that there is no hair, sweat, cream or other cosmetic products on the forehead surface.
- Make sure that the thermometer is at the same room temperature as the person on whom the measurement is taken for at least 30 minutes.
See our article: iHealth PT2L - What precautions should be taken before taking a measurement?
If in doubt, check the temperature with a conventional thermometer and/or consult your doctor.
*credit to Francis of iHealth Labs EU