- Check that the thermometer lens is perfectly clean. If in doubt, clean with a cotton swab slightly moistened with alcohol. After cleaning, wait 30 minutes before taking a new measurement.
- Make sure the forehead of the subject is free from sweat, cosmetics, dirt, or grease before measuring.
- User and the thermometer should be in the same ambient temperature for at least 30 minutes.
- Always hold the thermometer when taking a reading. Do not move the thermometer until you feel the final vibration.
- Don’t take a measurement while or immediately after nursing a baby.
- Users should not drink, eat, or be physically active before/while taking the measurement.
- Remove hats and wait 30 minutes before taking a measurement.
- Before taking a measurement, remove dirt or hair from the forehead area. Wait 30 minutes after cleaning before taking a measurement.
- Always take the temperature exactly as directed. Temperature results may vary if positioned in the wrong location.
*credit to Sylvain of iHealth Labs EU
https://helpcenter.ihealthlabs.eu/hc/en-gb/articles/360007270558-iHealth-PT3-Why-the-test-result-differ-from-the-previous-test-results-