When using the PT2L thermometer to take forehead temperature measurements, it's important to know that not all areas of the forehead give equally accurate results. Due to differences in subcutaneous blood vessel distribution, some forehead locations are better than others for assessing core body temperature.
After testing different forehead positions, we recommend taking readings at the following site:
- Center of the forehead, while holding the thermometer probe approximately 1 inch or less from the forehead.
This central forehead area provides the most reliable correlation to internal body temperature. The temporal regions on the sides of the forehead, as well as the uppermost forehead near the hairline tend to yield less precise readings.
The key is aiming the thermometer sensor directly at the center of the forehead. Keep about an inch of space between the tip of the thermometer and the skin surface. Press the scan button when the tip is aimed at the center of the forehead to get the most accurate measurement.
Avoid taking measurements too close to the eyebrows or hairline, as these peripheral forehead regions do not give consistently accurate results. By following these tips on optimal forehead placement, you can get the most precise core body temperature readings using the PT2L thermometer.